Develop Bugs

Flashing S20+ SM-G9860

I recently obtained a Samsung S20+ SM-G9860. However, I am in the US and am intending to flash the AT&T firmware for the SM-G986U. When I try to do this, I get a secure check fail on the PIT file due to the differing model. Is there a way to circumvent this? The two models have identical hardware from what I can see.
Is it possible to do this, and what is the process for doing this if it is indeed possible?

You cannot flash a rom built for a snapdragon chipset on a phone with a exynos chipset
Be thankful there is that safety check built in. Lol
Sent from my SM-G988U1 using Tapatalk

tdevaughn said:
You cannot flash a rom built for a snapdragon chipset on a phone with a exynos chipset
Be thankful there is that safety check built in. Lol
Sent from my SM-G988U1 using Tapatalk
Click to expand...
Click to collapse
It's not Exynos, it's also a Snapdragon.

Oh, the Brazil variant. Still dont think it will work. They might be dual sim
Sent from my SM-G988U1 using Tapatalk

tdevaughn said:
Oh, the Brazil variant. Still dont think it will work. They might be dual sim
Sent from my SM-G988U1 using Tapatalk
Click to expand...
Click to collapse
It's the Hong Kong variant. It does appear to be a dual SIM, however.

YES PLEASE!! I need to change my S20+ Snapdragon SM-G986U firmware to SM-9860 too!!!
Sanctanimus said:
I recently obtained a Samsung S20+ SM-G9860. However, I am in the US and am intending to flash the AT&T firmware for the SM-G986U. When I try to do this, I get a secure check fail on the PIT file due to the differing model. Is there a way to circumvent this? The two models have identical hardware from what I can see.
Is it possible to do this, and what is the process for doing this if it is indeed possible?
Click to expand...
Click to collapse
YES PLEASE!! I need to change my S20+ Snapdragon SM-G986U firmware to Hong Kong SM-9860 firmware too! Any help please Samsung S20+ Snapdragons masters?!! :crying:

Sanctanimus said:
I recently obtained a Samsung S20+ SM-G9860. However, I am in the US and am intending to flash the AT&T firmware for the SM-G986U. When I try to do this, I get a secure check fail on the PIT file due to the differing model. Is there a way to circumvent this? The two models have identical hardware from what I can see.
Is it possible to do this, and what is the process for doing this if it is indeed possible?
Click to expand...
Click to collapse
The hardware isn't identical, SM-G986U is a Single SIM Device, your's is a Dual SIM.. TGY is the CSC in your device and even if you could flash SM-G986U Firmware the CSC would not change, it will still be TGY. If you're looking to get full AT&T call functionality on your device it's not possible as the CSC doesn't support AT&T compatibility. Firmware is CSC specific as well.

varcor said:
The hardware isn't identical, SM-G986U is a Single SIM Device, your's is a Dual SIM.. TGY is the CSC in your device and even if you could flash SM-G986U Firmware the CSC would not change, it will still be TGY. If you're looking to get full AT&T call functionality on your device it's not possible as the CSC doesn't support AT&T compatibility. Firmware is CSC specific as well.
Click to expand...
Click to collapse
But mine has two IMEI numbers though 1 for physical and another for esim, HOWEVER the esim option to add another QR code for another network is not visible. Its like the device is locked for VERIZON esim use only.
Oh well, guess gotta wait for another few month for newer updates to be able to use another network esim or firmware flashing that can enable this option soon...

x88888x said:
But mine has two IMEI numbers though 1 for physical and another for esim, HOWEVER the esim option to add another QR code for another network is not visible. Its like the device is locked for VERIZON esim use only.
Oh well, guess gotta wait for another few month for newer updates to be able to use another network esim or firmware flashing that can enable this option soon...
Click to expand...
Click to collapse
If your device is the SM-G986U it's a Single SIM Device which doesn't at this point doesn't support eSim. Does the SIM Management Screen actually display the word "eSim"? Share a photo please. The device is likely still locked by Verizon. What is your motivation to change the Firmware to SM-G9860, do you live in Hong Kong?

Im sorry unfortunately I cant post links for my screenshots or upload any pictures..
If your device is the SM-G986U it's a Single SIM Device which doesn't at this point doesn't support eSim. Does the SIM Management Screen actually display the word "eSim"? Share a photo please. The device is likely still locked by Verizon. What is your motivation to change the Firmware to SM-G9860, do you live in Hong Kong?[/QUOTE]
I bought my phone online.. When I start up my phone it says Verizon, but its unlocked though because I can use any country physical simcard. Like right now im using my local simcard in Malaysia. I live in Malaysia and the reason I want to flash rom my SM-G986U device to Hong Kong firmware is so that I can use any eSim network in my country for my other network phone number.... If its a software for eSim that I can get for firmware that will be very helpful. Because the main local Malaysian samsung s20+ 5G firmware model is base on Exynos 990 which I doubt will fit for my US phone model..

I don't think you can flash SM-9860 Firmware onto your device but even if you could you still won't have eSim capability. Mix and matching firmware typically has more success on Exynos International Variants since they are Multi-CSC Enabled Devices. So if you have a British CSC (VOD) you may have success flashing German Firmware (VD2) since both CSC's are already stored in the device however even then some call features may not work. Snapdragon Devices don't have Multi-CSC's and as mentioned previously the Firmware is CSC Specific, they're made for one another. IF you had an Unlocked Bootloader, which you don't, there may be a method to modify the CSC once you root the device.. I did follow a thread a couple of years back where a gal had some success modifying her CSC on a Snapdragon Device but I believe that was a Galaxy S8. Also, I'm still curious if the word "eSim" actually appears in the SIM Management Screen on your device.

varcor said:
I don't think you can flash SM-9860 Firmware onto your device but even if you could you still won't have eSim capability. Mix and matching firmware typically has more success on Exynos International Variants since they are Multi-CSC Enabled Devices. So if you have a British CSC (VOD) you may have success flashing German Firmware (VD2) since both CSC's are already stored in the device however even then some call features may not work. Snapdragon Devices don't have Multi-CSC's and as mentioned previously the Firmware is CSC Specific, they're made for one another. IF you had an Unlocked Bootloader, which you don't, there may be a method to modify the CSC once you root the device.. I did follow a thread a couple of years back where a gal had some success modifying her CSC on a Snapdragon Device but I believe that was a Galaxy S8. Also, I'm still curious if the word "eSim" actually appears in the SIM Management Screen on your device.
Click to expand...
Click to collapse
Damn.. that is some nice insights.. I read a thread somewhere too that US SM-G986U cannot and will not be able to enable its OEM or unlocked bootloader.. the eSim actually doesnt appear in the Sim Management Screen on my device. I really want to upload some links of the screenshot but for now I cant do anything as Im a new member.. I just have to wait for the network shop to open up to change my current esim card to physical simcard.. its been 2 months plus of this coronavirus lockdown and our network providers cant do much about it too..
Anyways I really appreciate the insights, like you said even if I could flash in Hong Kong SM-9860 in to my US SM-G986U, I might run into some software or calls dysfunctionalities..

Anyone got th atct update for the sm-g9880 yet? Seems the u.s has got this update before Asia?

x88888x said:
Damn.. that is some nice insights.. I read a thread somewhere too that US SM-G986U cannot and will not be able to enable its OEM or unlocked bootloader.. the eSim actually doesnt appear in the Sim Management Screen on my device. I really want to upload some links of the screenshot but for now I cant do anything as Im a new member.. I just have to wait for the network shop to open up to change my current esim card to physical simcard.. its been 2 months plus of this coronavirus lockdown and our network providers cant do much about it too..
Anyways I really appreciate the insights, like you said even if I could flash in Hong Kong SM-9860 in to my US SM-G986U, I might run into some software or calls dysfunctionalities..
Click to expand...
Click to collapse
u typically cannot flash hk/china firmware onto us devices bcuz those models r typically oem unlockable and they make sure ppl cant just flash the firmware to a u model and unlock tye bl.. theyre typically signed with dif keys and would most likely fail instantly to flash

elliwigy said:
u typically cannot flash hk/china firmware onto us devices bcuz those models r typically oem unlockable and they make sure ppl cant just flash the firmware to a u model and unlock tye bl.. theyre typically signed with dif keys and would most likely fail instantly to flash
Click to expand...
Click to collapse
Thank you I understand..:crying: now I feel like I wanna sell my Verizon unlocked phone ?

tdevaughn said:
Oh, the Brazil variant. Still dont think it will work. They might be dual sim
Sent from my SM-G988U1 using Tapatalk
Click to expand...
Click to collapse
Do you think i can flash the Korean firmware on the SM G9860 BRI?

iNexusVitto said:
Do you think i can flash the Korean firmware on the SM G9860 BRI?
Click to expand...
Click to collapse
Not possible, the only options are flashing the SM-G9860 China or Hong Kong FW.

SM-G9880 BRI (taiwan) vs TGY (HK) differences? Thinking about changing CSC

I have a SM-G9880 BRI (taiwan) version and using in Australia. I have all the 3G/4G options but I'm unable to select any 5G - even though the phone is a 5G phone. I know my carrier does not use 5G in my area at this time, so is it not showing any 5G options because 5G is unsupported? Is it SIM related or would it be because I have a BRI (taiwan) CSC? I know others in Australia with SM-G9880 TGY versions using 5G (on different carrier) and they have 5G options... Just confused whether the 5G options are disabled because of the SIM, or because of the CSC???
If its CSC related, I might try Samkey to change the CSC to TGY...

cheetah2k said:
I have a SM-G9880 BRI (taiwan) version and using in Australia. I have all the 3G/4G options but I'm unable to select any 5G - even though the phone is a 5G phone. I know my carrier does not use 5G in my area at this time, so is it not showing any 5G options because 5G is unsupported? Is it SIM related or would it be because I have a BRI (taiwan) CSC? I know others in Australia with SM-G9880 TGY versions using 5G (on different carrier) and they have 5G options... Just confused whether the 5G options are disabled because of the SIM, or because of the CSC???
If its CSC related, I might try Samkey to change the CSC to TGY...
Click to expand...
Click to collapse
5G has not been activated on BRI csc as there is no 5G in Taiwan yet. Its best changing to TGY however you will only get 5G using sim tray 2 (meaning you will not be able to use SD card at the moment).

Is there a fool proof method using Samkey?? Any help is appreciated

cheetah2k said:
Is there a fool proof method using Samkey?? Any help is appreciated
Click to expand...
Click to collapse
Actually - never mind
I sorted it! That was easy!! And 4G now has a 4G+ and its even faster than before woooohoooo!! :highfive::highfive::highfive:

Please help
I am also stuck with Taiwan version and have already signed up to a 5G plan in Australia thinking these were all 5g phones. Please suggest what I should be doing.
---------- Post added at 12:50 PM ---------- Previous post was at 12:44 PM ----------
cheetah2k said:
Actually - never mind
I sorted it! That was easy!! And 4G now has a 4G+ and its even faster than before woooohoooo!! :highfive::highfive::highfive:
Click to expand...
Click to collapse
Please advise me what you did and how I can get over the 5G issue please
Thank you in advance

use samkey to change your csc to tgy , 5g sim card goes to second sim tray

cheetah2k said:
Actually - never mind
I sorted it! That was easy!! And 4G now has a 4G+ and its even faster than before woooohoooo!! :highfive::highfive::highfive:
Click to expand...
Click to collapse
[MENTION=414798]
@cheetah2k
Is changing to hk firmware version using Samkey what you ended up doing? Was it easy.... I am not Tech savvy. I got this phone from eBay seller who was showing in Sydney but the phone ended up coming from Taiwan

Mittesh said:
[MENTION=414798]
@cheetah2k
Is changing to hk firmware version using Samkey what you ended up doing? Was it easy.... I am not Tech savvy. I got this phone from eBay seller who was showing in Sydney but the phone ended up coming from Taiwan
Click to expand...
Click to collapse
This is the method I used (creds to user jabreel.torrin in the S10 forums. I did modify this though to suit the S20U) - You don't need to Odin flash the TGY firmware as its identical to the BRI - only CSC needs to change from BRI to TGY :good:
1. Buy 3 credits (can't buy 2) from this seller that on ebay that I used : https://www.ebay.com.au/itm/SamKey-Code-Reader-3-Credits-UNLOCK-Fast-Service/324110503100?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2648
2. After buying the Samkey credits you will be emailed the username and password for the Samkey App (you need this!)
3. Enable developer options on your phone: Settings > About phone > Software Information > Tap "build number" 8 times or until you see a pop-up message that says "Developer mode has been enabled".
4. Turn on USB debugging on your phone: Settings > Developer options > USB debugging > Allow USB Debugging > Tap "OK"
5. Go to www.samkey.org and download the Samsung USB drivers (if you havent installed any samsung software on the PC already) and the Samkey application
6. Install the drivers first, and then install Samkey application on your computer > Connect your phone to your computer with a usb cable > Login with the username/password you received from the ebay seller.
7. Click the "Read Info ADB" button to make sure your phone has been accepted by ADB
8. Insert the CSC code you want into the "Change CSC (Buyer)" field > With the BRI SM-G9880 you want to insert TGY (where is shows PHN in the pic below)
9. Click the "Change CSC" button > Confirm that you want to spend 1 or 2 credits (for me it was 1, but some report 2 used).
Let the application do it's work after which it will reboot and then you're good to go. :fingers-crossed:
For me it was seamless and worked so easy. Zero complaints. 5 min later I had a TGY phone - and I have reserve credits for the next Samsung phone I need to change Hope this helps guys!
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

Thank you
cheetah2k
OMG I can't thank you enough for the detailed breakdown. You just saved me alot of headache. I will try it tonight and let you know how I go.
Thank you again

Mittesh said:
cheetah2k
OMG I can't thank you enough for the detailed breakdown. You just saved me alot of headache. I will try it tonight and let you know how I go.
Thank you again
Click to expand...
Click to collapse
No probs mate, dont forget to click thanks on my tutorial if it goes to plan
Now all i need is to get a Telstra sim (as theres coverage in my area) and then can use the Band N78 5G :laugh:

cheetah2k said:
No probs mate, dont forget to click thanks on my tutorial if it goes to plan
Now all i need is to get a Telstra sim (as theres coverage in my area) and then can use the Band N78 5G :laugh:
Click to expand...
Click to collapse
It's worked!!!! And it was super easy. Is it true that only Sim 2 works for 5G? I can see the 5G option on Sim 1 but haven't seen it connect. Not sure if it's cuz of no coverage or issue with phone Sim trays

I did this but I wouldn't recommend changing to TGY firmware as a Telstra user. You don't get band 28 700mhz carrier aggregation. So no 4gx . For some reason I only get it with the Taiwan CSC but you miss out on 5g , to me that is less of a big deal than no 700mhz band 28 pairing with other bands for 4gx. In other words you'll get 4g+ less with Hong Kong firmware but you'll get 5g.

pafc66 said:
I did this but I wouldn't recommend changing to TGY firmware as a Telstra user. You don't get band 28 700mhz carrier aggregation. So no 4gx . For some reason I only get it with the Taiwan CSC but you miss out on 5g , to me that is less of a big deal than no 700mhz band 28 pairing with other bands for 4gx. In other words you'll get 4g+ less with Hong Kong firmware but you'll get 5g.
Click to expand...
Click to collapse
If there a way to get both the options?

Mittesh said:
If there a way to get both the options?
Click to expand...
Click to collapse
Not at the moment.
Best to stay on Taiwan firmware as they appear to have 700mhz band 28 carrier aggregation and wait till they add the 5g option when their local networks commence it later this year. I'm told it's this time when Samsung will push a update to enable 5g capabilities to Taiwan firmware.

pafc66 said:
Not at the moment.
Best to stay on Taiwan firmware as they appear to have 700mhz band 28 carrier aggregation and wait till they add the 5g option when their networks commence it. I'm told it's this time when Samsung will push a update to enable 5g capabilities to Taiwan firmware.
Click to expand...
Click to collapse
Is there an option to go back to BRI Taiwan firmware once they enable 5G with the option of have both these bands at the stage?

Mittesh said:
Is there an option to go back to BRI Taiwan firmware once they enable 5G with the option of have both these bands at the stage?
Click to expand...
Click to collapse
Yeah, you'll just have to download the Taiwan firmware when they get that update and change the CSC with samkey back to BRI

pafc66 said:
Yeah, you'll just have to download the Taiwan firmware when they get that update and change the CSC with samkey back to BRI
Click to expand...
Click to collapse
If you change your CSC, will your next firmware update me for that country. Like I have just changed from BRI to TGY... Will be next update automatically be the Hong Kong version of firmware? Or will it go back to BRI?

Mittesh said:
If you change your CSC, will your next firmware update me for that country. Like I have just changed from BRI to TGY... Will be next update automatically be the Hong Kong version of firmware? Or will it go back to BRI?
Click to expand...
Click to collapse
You won't get a over the air update if you CSC doesn't match your firmware. You'll have to change the CSC to match your firmware. So change to BRI Taiwan CSC to receive the Taiwan update and vise versa if you have the Hong Kong firmware

pafc66 said:
You won't get a over the air update if you CSC doesn't match your firmware. You'll have to change the CSC to match your firmware. So change to BRI Taiwan CSC to receive the Taiwan update and vise versa if you have the Hong Kong firmware
Click to expand...
Click to collapse
So my phone was BRI Taiwan version and all I did was buy the Samkey credits and change CSC to TGY to enable 5G. Does that mean no more updates for me until I change it back to Taiwan?

pafc66 said:
I did this but I wouldn't recommend changing to TGY firmware as a Telstra user. You don't get band 28 700mhz carrier aggregation. So no 4gx . For some reason I only get it with the Taiwan CSC but you miss out on 5g , to me that is less of a big deal than no 700mhz band 28 pairing with other bands for 4gx. In other words you'll get 4g+ less with Hong Kong firmware but you'll get 5g.
Click to expand...
Click to collapse
Band 28 is available in the carrier band selection options FYI :good::good:

How to identify correct firmware to upgrade - S20+ 5G Snapdragon G986U

Hello -
Guys for last few days i have been trying to install Android 11 OneUI 3.0 update to my S20+ 5G phone. Since i did not receive the update, i was trying to flash it. But i couldnt flash that, in fact, I softbricked my phone in trying so. I will try to explain details here, please guide me to identify the correct firmware to flash.
This phone is unbranded and USA variant, which I bought from someone. I don't have the box but it is unlocked and unbranded phone, any SIM works on it. I tried looking for the CSC and AP version, which I found
AP VERSION G986USQU1ATAW
CSC VERSION G986UOYN1ATAW
I could only find one firmware matching this, which was still Android 10. And it had CSC code = TMB on SamFW website. I was confused what my actual CSC is, i tried looking for with the "Phone Info" app and it mentioned the "Active CSC Code: XAA".
So I tried following firmwares from Samfw.com
Samsung Galaxy S20+ 5G SM-G986U - TMB - G986USQS1CTL1
Samsung Galaxy S20+ 5G SM-G986U - TMB - G986USQU1CTKH
Samsung Galaxy S20+ 5G SM-G986U1 - XAA - G986U1UES1CTL5
Samsung Galaxy S20+ 5G SM-G986U - SPR - G986USQS1CTL1
I couldnt flash with any of the above firmware. It mostly stucked while flashing "super.img", i was using Odin 3.14 patched.
After trying this flashing, my phone was softbricked and i was unable to flash any of the firmware but one thing worked (which i dont know why). I flashed AP, BL and CP with Samsung Galaxy S20+ 5G SM-G986U - TMB - G986USQU1ATAW since it's AP version and CSC was matching exactly same to my previous AP & CSC versions. But this firmware's CSC file was not being flashed to my phone, it was always getting stuck on flashing "prism.img", so i flashed CSC file with Samsung Galaxy S20+ 5G SM-G986U1 - XAA - G986U1UES1BTK1 and the phone thankfully restored back to Android 10. But now my software update section says "Your current software version isn't supported. Visit a service center."
And now after flashing, my CSC version is G986U1OYM1BTK1 which was G986UOYN1ATAW earlier. I read somewhere that in the CSC version when you check from *#1234#, the three letters after your phone model is the CSC code. According to this, for my actual firmware it was OYN i think (G986UOYN1ATAW) and now after flashing it is OYM i think (G986U1OYM1BTK1). I don't see any firmware website mentioning any firmware with this CSC code. I am very confused now, do i not have any updated firmware for my phone or i have been trying wrong firmwares.
I am attaching current screenshots below about current state, Please help me understanding how to get the right firmware version to flash. If anyone has same version and has flashed, please enlighten.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

To check the original CSC go to Settings, About Phone, Software Information, Service Provider SW ver. On the bottom string the last three letters will be your device’s original CSC Code. Doing a Factory Reset will restore it to the original firmware but be sure to backup your data.
You have a Multi-CSC device. Your best option to receive timely updates is setting the CSC to match your Service Provider. Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press dial, you should see a screen with the list of available CSC codes for your device. Select the CSC for your Service Provider and tap the Install option.
Samsung's Smart Switch platform often times will offer updates before they're available via OTA. Be aware Android 11 One UI 3.0 isn't completely stable, many users are having issues after updating.

So my service Provider SW ver is "XAA/XAA/SPR", which means my CSC code should be SPR. My question is then why this Samsung Galaxy S20+ 5G SM-G986U - SPR - G986USQS1CTL1 did not work? :/ It should have.
Also, why do i see the same AP version and CSC version with this firmware Samsung Galaxy S20+ 5G SM-G986U - TMB - G986USQU1ATAW, whose CSC code looks to be TMB. Its very much confusing.
AP VERSION G986USQU1ATAW
CSC VERSION G986UOYN1ATAW
Plus, this doesn't work in my country i believe. #272*IMEInumber#

So the phone isn't an unbranded device, it's branded by Sprint which is now T-mobile. OTA Updates aren't going to be available unless you're on Sprint/T-Mobile's Network using a Sprint/T-Mobile SIM Card. I'm not sure where you'll find the correct FW for your phone, that's why performing a Factory Reset is going to be the best option to receive OTA's.

Change the csc to xaa and reset the phone and install the software in connection with the patched Odin
Download Samsung Galaxy S20+ SM-G986U1 XAA USA G986U1UES1CTL5 firmware
Fast download latest Samsung Galaxy S20+ firmware SM-G986U1 from USA with G986U1UES1CTL5 and Android version 11
www.sammobile.com

In which country do you use the device and what is the operator name you use?

altiparmak1982 said:
In which country do you use the device and what is the operator name you use?
Click to expand...
Click to collapse
Pakistan, operator is Zong.

kas07 said:
Pakistan, operator is Zong.
Click to expand...
Click to collapse
Since it's a Sprint Branded device there is no FW change will allow you to receive OTA's. The only option is Smart Switch after you do a Factory Reset back to the original Sprint FW. Curious why you aquired a US S20 for use in Pakistan? The Global Exynos variant would have been appropriate if call features and updates are a priority.
altiparmak1982 said:
Change the csc to xaa and reset the phone and install the software in connection with the patched Odin
Download Samsung Galaxy S20+ SM-G986U1 XAA USA G986U1UES1CTL5 firmware
Fast download latest Samsung Galaxy S20+ firmware SM-G986U1 from USA with G986U1UES1CTL5 and Android version 11
www.sammobile.com
Click to expand...
Click to collapse
The Original CSC can't be modified, it will remain SPR. This FW is for a US Unbranded device, it won't receive OTA's for a Sprint Branded phone. Since the user is in Pakistan and not on Sprint's Network or using a Sprint SIM the only option is downloading updates via Smart Switch after the original FW is restored by Factory Resetting the device.

Well i acquired it because it had snapdragon and 12GB RAM unlike the global exynos version and its not branded, there's no logo and its totally unlocked. So i didnt have any idea it will have Sprint FW.
SmartSwitch doesnt show any update. And now even my phone says "Your current software version isn't supported. Visit a service center."

altiparmak1982 said:
Change the csc to xaa and reset the phone and install the software in connection with the patched Odin
Download Samsung Galaxy S20+ SM-G986U1 XAA USA G986U1UES1CTL5 firmware
Fast download latest Samsung Galaxy S20+ firmware SM-G986U1 from USA with G986U1UES1CTL5 and Android version 11
www.sammobile.com
Click to expand...
Click to collapse
I already have tried flashing with this firmware it dint work. But i didn't change CSC before trying, is it changeable?

Since the original CSC is SPR it is a Sprint Branded device even though it may be unlocked. Updates are pushed by Samsung for specific devices based on the device's Original CSC, not the Active CSC. The only way you'll receive updates is via Smart Switch with the phone connected to a PC, Laptop or Tablet after you've installed the Sprint FW.
Not sure how valuable the update will be to you since it's structured for Sprint but either way you might consider holding off on Android 11 OneUl 3.0, it's not yet a stable version. Many of the recent posts here are S20 users who've developed issues after installing the 3.0 update.

varcor said:
Since the original CSC is SPR it is a Sprint Branded device even though it may be unlocked. Updates are pushed by Samsung for specific devices based on the device's Original CSC, not the Active CSC. The only way you'll receive updates is via Smart Switch with the phone connected to a PC, Laptop or Tablet after you've installed the Sprint FW.
Not sure how valuable the update will be to you since it's structured for Sprint but either way you might consider holding off on Android 11 OneUl 3.0, it's not yet a stable version. Many of the recent posts here are S20 users who've developed issues after installing the 3.0 update.
Click to expand...
Click to collapse
I suggested such a way because the user says xaa for csc. I agree with what you said except that if the SPR software burns, will the SPR not ask for the sim card at startup?

altiparmak1982 said:
I suggested such a way because the user says xaa for csc. I agree with what you said except that if the SPR software burns, will the SPR not ask for the sim card at startup?
Click to expand...
Click to collapse
Can't say but typically a SIM isn't required to setup a Galaxy device. The real problem is the user wants updates for a device which is operating outside of it's native region. Many users who opted for the Snapdragon SoC to avoid a Exynos variant are having the same issues. The Sprint CSC is in conflict with his region.
The Active CSC can be changed to function in Pakistan but it can't be updated. I've explained the only method to update the device in his/her region but to what benefit? If a user has a priority for updates and call features the best bet is always acquiring their Service Provider's device. Samsung is the real culprit here by using competing chipsets on the same model numbered devices.

varcor said:
To check the original CSC go to Settings, About Phone, Software Information, Service Provider SW ver. On the bottom string the last three letters will be your device’s original CSC Code. Doing a Factory Reset will restore it to the original firmware but be sure to backup your data.
You have a Multi-CSC device. Your best option to receive timely updates is setting the CSC to match your Service Provider. Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press dial, you should see a screen with the list of available CSC codes for your device. Select the CSC for your Service Provider and tap the Install option.
Samsung's Smart Switch platform often times will offer updates before they're available via OTA. Be aware Android 11 One UI 3.0 isn't completely stable, many users are having issues after updating.
Click to expand...
Click to collapse
Hello sir I have S20+ 5g Canadian, g986w Snapdragon model, nd I'm frm India I want to change csc of Indian but there is no options for INS/INU , there is only 8,10 csc option how can I change to indian ??? Plssss help TIA... Yeahhh I also downgraded it to android 10 oneui 2.5

Finally upgraded my Samsung Galaxy S20+ Snapdragon SM-G986U to ANDROID 11, ONE UI 3.1
After getting failed in failing many of the ROMs earlier, I tried latest android 11 of 1 June, 2021 build of CSC "XAS" and model "G986U" and flashed only AP, BL & CP file. Didn't flash the CSC file, CSC file was still the older, which worked after last soft-bricked (CSC: SM-G986U1 - XAA - G986U1UES1BTK1)
CSC - XAS: https://samfw.com/firmware/SM-G986U/XAS/G986USQS2DUE2
(Please read earlier comments for context)

kas07 said:
Finally upgraded my Samsung Galaxy S20+ Snapdragon SM-G986U to ANDROID 11, ONE UI 3.1
After getting failed in failing many of the ROMs earlier, I tried latest android 11 of 1 June, 2021 build of CSC "XAS" and model "G986U" and flashed only AP, BL & CP file. Didn't flash the CSC file, CSC file was still the older, which worked after last soft-bricked (CSC: SM-G986U1 - XAA - G986U1UES1BTK1)
CSC - XAS: https://samfw.com/firmware/SM-G986U/XAS/G986USQS2DUE2
(Please read earlier comments for context)
Click to expand...
Click to collapse
Hey, I have a similar issue and I live in the same country, I got a unlocked Samsung s20+ 5g snapdragon variant and I have already done factory reset but it doesn't show any updates in the settings it just says "Your current software version isn't supported." and it says software is latest version in smart switch.
My CSC is a bit different than yours: XAA/XAA/WWD
I have attached the smart switch pic, can anyone help me update the phone to the latest version?
Also a question to kas07, was your phone official pta approved or cpid?

Question Need help to Convert SM-F936U/DS ATT Fold 4 to Indian Fold 4 version?

So I am using AT&T version Zfold 4 model SM-F936U/DS in India and my software version is as follows:
Build number
SP2A.220305.013.F936USQU1AVGA
Service provider software version
SAOMC_SM-F936U_OYN_GCF_12_0003
GCF/GCF.GCF/XAA
Its stuck on android 12 May update.
I want to flash Indian firmware to make it Indian version of Z fold 4 for faster updates and enabling the call recorder.
What do I need to do? Any help will be appreciated. If this is answered anywhere please provide links to that thread and I will delete this one.
I am totally confused about CSC, firmware version, carrier version etc.

Not gonna happen without root, even then might be difficult.
The Indian model is a F936B model. Trying to flash the firmware on it is like trying to flash IOS on an android.
Did see a way to change CSC in the forum however I believe you needed to have the compatible variant as it needed the OXM ROM flashed 1st.

ultramag69 said:
Not gonna happen without root, even then might be difficult.
The Indian model is a F936B model. Trying to flash the firmware on it is like trying to flash IOS on an android.
Did see a way to change CSC in the forum however I believe you needed to have the compatible variant as it needed the OXM ROM flashed 1st.
Click to expand...
Click to collapse
Thanks for the reply. I am browsing the forums for a solution and so far have got nothing. I don't want to root the device as of now.

ultramag69 said:
Not gonna happen without root, even then might be difficult.
The Indian model is a F936B model. Trying to flash the firmware on it is like trying to flash IOS on an android.
Did see a way to change CSC in the forum however I believe you needed to have the compatible variant as it needed the OXM ROM flashed 1st.
Click to expand...
Click to collapse
Hii have a zfold f936b bought from eBay.
It says IMEI is 00000000 and when I insert sim nothing happens.
Any idea what are my options ?

Adv.Chirag said:
So I am using AT&T version Zfold 4 model SM-F936U/DS in India and my software version is as follows:
Build number
SP2A.220305.013.F936USQU1AVGA
Service provider software version
SAOMC_SM-F936U_OYN_GCF_12_0003
GCF/GCF.GCF/XAA
Its stuck on android 12 May update.
I want to flash Indian firmware to make it Indian version of Z fold 4 for faster updates and enabling the call recorder.
What do I need to do? Any help will be appreciated. If this is answered anywhere please provide links to that thread and I will delete this one.
I am totally confused about CSC, firmware version, carrier version etc.
Click to expand...
Click to collapse
Your phone, F936U, is carrier locked to the U.S. network, AT&T, and if genuine, can only receive updates when connected on their network as unlike other models, AT&T issue their own firmware updates.
This model also has a locked bootloader which prevents the flashing of alternative stock firmware.
Also, it seems strange that a phone that was only launched in August 2022 would have a, "May", update. Install DevCheck, free from the Play Store and check if you have a clone phone.

Emmanuel Spadafora said:
Hii have a zfold f936b bought from eBay.
It says IMEI is 00000000 and when I insert sim nothing happens.
Any idea what are my options ?
Click to expand...
Click to collapse
The phones efs/file is corrupt. See...
What is EFS folder ?
Hi All, I came to know the EFS folder is very important in Samsung phones. I didn't cared about it and flashed a different region ROM (XEU->OZS). Each thing is working fine. I can remember that there used to be some files inside the EFS folder...
forum.xda-developers.com
I have never been able to repair an efs/file but here is a link to someone who claims to have done so...
[GUIDE] how to fix EFS Damaged on samsung devices [EASY!]
Edited in 2022 to make it look a bit better! *WARNING* *TAKE A NANDROID BACKUP OF EFS AND BASEBAND BEFORE STARTING* Hello people, first I want to say that this is my first guide so it doesn't really look professional but I am doing my best to...
forum.xda-developers.com

[email protected] said:
Your phone, F936U, is carrier locked to the U.S. network, AT&T, and if genuine, can only receive updates when connected on their network as unlike other models, AT&T issue their own firmware updates.
This model also has a locked bootloader which prevents the flashing of alternative stock firmware.
Also, it seems strange that a phone that was only launched in August 2022 would have a, "May", update. Install DevCheck, free from the Play Store and check if you have a clone phone.
Click to expand...
Click to collapse
I got it carrier unlocked. Everything works fine in India with major carriers, even getting 5G to work here. Attaching screenshots of DevCheck
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

Adv.Chirag said:
I got it carrier unlocked. Everything works fine in India with major carriers, even getting 5G to work here. Attaching screenshots of DevCheck
View attachment 5789875View attachment 5789881
Click to expand...
Click to collapse
Seems genuine. Your mention of a May update threw me.
It is running the F936USQU1AVGA firmware which it was launched with and therefore, has never received an update.
However, it is still a bootloader locked model, even though you have it carrier unlocked. The only way to update it is to insert an AT&T SIM card and connect to their network in the US. Other than that, you will need to do a search to see if there are any custom ROM's that utilises the locked AT&T bootloader. Alternatively, just carry on using it as it is

[email protected] said:
Seems genuine. Your mention of a May update threw me.
It is running the F936USQU1AVGA firmware which it was launched with and therefore, has never received an update.
However, it is still a bootloader locked model, even though you have it carrier unlocked. The only way to update it is to insert an AT&T SIM card and connect to their network in the US. Other than that, you will need to do a search to see if there are any custom ROM's that utilises the locked AT&T bootloader. Alternatively, just carry on using it as it is
Click to expand...
Click to collapse
Thanks for clearing these things for me. I appreciate it.

No experience with AT&T but if they release their firmware online then you should be able to download & flash latest using ODIN.
Good Luck....

ultramag69 said:
No experience with AT&T but if they release their firmware online then you should be able to download & flash latest using ODIN.
Good Luck....
Click to expand...
Click to collapse
Thanks

i dont think its possible, India phone comes with 2 physical sim slots or an esim option for the second sim where as the AT&T which you and I have, comes only with single physical sim.

Adv.Chirag said:
So I am using AT&T version Zfold 4 model SM-F936U/DS in India and my software version is as follows:
Build number
SP2A.220305.013.F936USQU1AVGA
Service provider software version
SAOMC_SM-F936U_OYN_GCF_12_0003
GCF/GCF.GCF/XAA
Its stuck on android 12 May update.
I want to flash Indian firmware to make it Indian version of Z fold 4 for faster updates and enabling the call recorder.
What do I need to do? Any help will be appreciated. If this is answered anywhere please provide links to that thread and I will delete this one.
I am totally confused about CSC, firmware version, carrier version etc.
Click to expand...
Click to collapse
Hi Chirag,
were you able to update your phone? I have the same model(SM-F936U/DS) and stuck with an old update and no new updates show up even though Andriod 13 has been rolled out for the Indian variants.
if there is no possibility of updating the phone then I might consider selling it! any help woud be appreciated.

chakraa2 said:
Hi Chirag,
were you able to update your phone? I have the same model(SM-F936U/DS) and stuck with an old update and no new updates show up even though Andriod 13 has been rolled out for the Indian variants.
if there is no possibility of updating the phone then I might consider selling it! any help woud be appreciated.
Click to expand...
Click to collapse
There is no way I could find online to get the updates. Nothing works. The only way is to have US sim and be connected to AT&T network in US to get the update which is impossible. So I guess we are stuck with the old os version.

Adv.Chirag said:
There is no way I could find online to get the updates. Nothing works. The only way is to have US sim and be connected to AT&T network in US to get the update which is impossible. So I guess we are stuck with the old os version.
Click to expand...
Click to collapse
Hi Chirag,
Thanks for the revert. Thats a bummer that we can't do anything with the update. I can still make my peace with the slow updates but having no updates especially the security updates is very concerning.
I will keep you posted in case I happen to come across any solution to this.
Regards,
Amit.

Adv.Chirag said:
I got it carrier unlocked. Everything works fine in India with major carriers, even getting 5G to work here. Attaching screenshots of DevCheck
View attachment 5789875View attachment 5789881
Click to expand...
Click to collapse
may I ask how you able to unlock it? Who did you go to?

I would say just start going through the different csc that's how I got mine to show the new up date then I just went back to gfc
Adv.Chirag said:
There is no way I could find online to get the updates. Nothing works. The only way is to have US sim and be connected to AT&T network in US to get the update which is impossible. So I guess we are stuck with the old os version.
Click to expand...
Click to collapse
I would say just start changing csc until it comes up that's how I got mine to show then January update and then I went back to GFC

shorty9210 said:
I would say just start going through the different csc that's how I got mine to show the new up date then I just went back to gfc
I would say just start changing csc until it comes up that's how I got mine to show then January update and then I went back to GFC
Click to expand...
Click to collapse
Hi, Do you mind listing out the csc version that you used? Also any tips on how to flash it would be appreciated . The lack of software update is really driving me nuts man.

Adv.Chirag said:
There is no way I could find online to get the updates. Nothing works. The only way is to have US sim and be connected to AT&T network in US to get the update which is impossible. So I guess we are stuck with the old os version.
Click to expand...
Click to collapse
Hi Chirag,
I can confirm the method mentioned shorty9210 indeed works! I just changed the CSC to T-Mob and the updates have started flowing. Just use the samFw.com tool to change the CSC, you will get T-MOB logo once you have changed the CSC but the updates will come by. It didnt delete the data too. Couldnt be any happier!
Give it a shot!
Cheers,
Amit.

shorty9210 said:
I would say just start going through the different csc that's how I got mine to show the new up date then I just went back to gfc
I would say just start changing csc until it comes up that's how I got mine to show then January update and then I went back to GFC
Click to expand...
Click to collapse
you are a life saver sir! Thanks so much! I changed the csc to T-Mob and the updates are flowing! A quick question though do we need to change back and forth to GFC everytime theres an update? For now mine is at T-MOB.

How To Guide How to Enable All Bands Through Service Menu on ALL International Snapdragon Samsung S20/S21/S22/Fold2/Fold3/Fold4+ series (including 4G LTE, 5G NR)

Background​Previous methods have only worked on US and Canada phones due to the dialer code only working on US/Canada phones on U and U1 firmware, and also the presence of IOTHiddenMenu on those devices' firmware. However, thanks to @K0mraid3's successful resurrection of the System Shell exploit, the Service Menu method can now be applied to International Snapdragon phones as well.
This means, any international Samsung S20/S21/S22/Fold2/Fold3/Fold4/... with Snapdragon processors, including but not limited to G9880, G988N, G9980, S908E, F936B...
The method used in this post is to directly launch the Service Menu by invoking the Service Mode RIL directly and bypass the need for IOTHiddenMenu or equivalent dialer codes. I found this specific command by decompiling Service Mode RIL APK and tracing through its AndroidManifest and BroadcastReceiver implementation.
How to (new method)​1. Download Samsung Toolkit app onto your phone
2. Follow the instructions for running the app.
3. Use the Service Menu option in the app and follow from #5 in the below instructions
How to (original)​1. Obtain System Shell access on your phone by following the instructions in @K0mraid3 's System Shell Exploit thread.
2. In the newly-opened System Shell, copy and paste the following command,
Code:
am broadcast -a com.samsung.android.action.SECRET_CODE -d android_secret_code://27663368378 -n com.sec.android.RilServiceModeApp/.SecKeyStringBroadcastReceiver
Ensure the entire command is copied correctly.
3. Run the command.
4. You should now see the Service Menu appear on the phone.
5. Follow instructions for Method 2 in the original How to unlock bands thread.
6. Follow instructions for Method 1 in the original How to unlock bands thread.
7. Now all bands, both 4G LTE and 5G NR that the hardware is capable of, are unlocked.
Proof​I got my hands on a Korean model S20 Ultra (G988N) which has a Snapdragon CPU. Out of the box, it ONLY supports 5G NR n78. After doing the above steps, it now supports n5, n77, n78.
Before After
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Bonus​On certain international phones *#0011# or *#2263# don't work the way you expect them to. But with the service menu, you can access the same exact ones as the US models through the service menu (RF Test -> Band Selection to replace 2263, and Protocol State ->Basic Information to replace 0011)
In the case of the Korean phone, 2263 did not work at all. But 0011 brought up a totally different looking screen than the US version did.
Limitations​For Exynos models owners - sorry, you're out of luck for now. I haven't been able to find a single menu that helps unlock bands on those models. The menus that open are VERY different and limited in functionality. Unfortunately, that's just how Samsung made it.
While "Disable CA Combos" is enabled by forcing GCF, it does not overcome hardware supported CA combos. So using a US SIM on the Korean phone for example, will still refuse to engage Carrier Aggregation on US carriers' bands.
Credits​@K0mraid3 for the System Shell exploit
@peacey8 / @wr3cckl3ss1 / @bigdave79 for the Band Unlocking instructions on US/CA models

Respect!
Is there a way to check the activated bands before going through all the steps?
With *#0011# on my SM-9010 (S22 SD), I can see that my phone uses n28 here.

Swaddy said:
Respect!
Is there a way to check the activated bands before going through all the steps?
With *#0011# on my SM-9010 (S22 SD), I can see that my phone uses n28 here.
Click to expand...
Click to collapse
Yes you can check the current available bands by going into the Service Menu and RF Test, Band Selection

I would love to find a way to get this to work on Exynos chips. I have the intl S21+ and while I do have a 5G band for Tmobile in USA, I just can't ever connect to it.

You Sir, might just be a legend. I've got the Japanese Olympic Edition of the S21 here and never got to use the full potential of it here in Europe because of its limited band compatibility.
All other methods I tried so far didn't work, so I was just about to sell it- when I found this thread by accident. I'll give it a shot tomorrow.
Any idea if this change is persistent or will it be reset after an update?

Murdock80 said:
You Sir, might just be a legend. I've got the Japanese Olympic Edition of the S21 here and never got to use the full potential of it here in Europe because of its limited band compatibility.
All other methods I tried so far didn't work, so I was just about to sell it- when I found this thread by accident. I'll give it a shot tomorrow.
Any idea if this change is persistent or will it be reset after an update?
Click to expand...
Click to collapse
It's persistent, until a CSC change or a firmware update that makes changes to the CSC.

rayw_xda said:
It's persistent, until a CSC change or a firmware update that makes changes to the CSC.
Click to expand...
Click to collapse
Thanks mate, I seemingly got it to work up to (and including) Step 5 of your description.
Just to avoid a misunderstanding: Do you suggest to go through Method 2 AND then Method 1 of the "How to unlock bands" thread or is one of them sufficient?
Edit:
Proceeded with Method 2, then 1. All Bands enabled, verified via Band selection menu.
Awesome!
Can I buy you a beer?

Murdock80 said:
Thanks mate, I seemingly got it to work up to (and including) Step 5 of your description.
Just to avoid a misunderstanding: Do you suggest to go through Method 2 AND then Method 1 of the "How to unlock bands" thread or is one of them sufficient?
Edit:
Proceeded with Method 2, then 1. All Bands enabled, verified via Band selection menu.
Awesome!
Can I buy you a beer?
Click to expand...
Click to collapse
Glad it worked for you!
Beer would be appreciated too . My signature has links for that if you'd like

Any way to get *#73# back for Verzion and T-Mobile etc? Since at least the Jan 1, 2023 update, the the SamFW FRP tool, go to MTP tab and click on "Enable Secret Code for Verizon" no longer works on the S21 Ultra (SM-G998U1).

Can you PLEASE determine if this same command works on the S23U to launch the Service Menu, or what steps are needed to find out?
Now that Snapdragon is being used across all regions, I think this will be huge for US customers who want an unlocked bootloader if they can easily purchase an EU S23U and enable all bands with this method!

bdvince said:
Can you PLEASE determine if this same command works on the S23U to launch the Service Menu, or what steps are needed to find out?
Now that Snapdragon is being used across all regions, I think this will be huge for US customers who want an unlocked bootloader if they can easily purchase an EU S23U and enable all bands with this method!
Click to expand...
Click to collapse
If you buy me an S23 then sure

dyeager said:
Any way to get *#73# back for Verzion and T-Mobile etc? Since at least the Jan 1, 2023 update, the the SamFW FRP tool, go to MTP tab and click on "Enable Secret Code for Verizon" no longer works on the S21 Ultra (SM-G998U1).
Click to expand...
Click to collapse
There's this alternative method:
https://www.reddit.com/r/samsung/comments/ybpnng
If that still doesn't work, here's a surefire way that works,
https://www.reddit.com/r/samsung/comments/10zdhv1

bdvince said:
Can you PLEASE determine if this same command works on the S23U to launch the Service Menu, or what steps are needed to find out?
Now that Snapdragon is being used across all regions, I think this will be huge for US customers who want an unlocked bootloader if they can easily purchase an EU S23U and enable all bands with this method!
Click to expand...
Click to collapse
There's now an easier method to find out (without a PC, or USB cable),
https://www.reddit.com/r/samsung/comments/10zdhv1

rayw_xda said:
There's now an easier method to find out (without a PC, or USB cable),
https://www.reddit.com/r/samsung/comments/10zdhv1
Click to expand...
Click to collapse
I don't have an S23 yet but I'm trying to get S23 users to confirm they can launch the service menu/access band selection.
I see welshkiwi95 from that reddit stated he couldn't get Shizuku to work due to a VERSION_LOCKED message. For users that already have rooted their phones they wouldn't need a system level shell, wouldn't this be circumvented?

bdvince said:
I don't have an S23 yet but I'm trying to get S23 users to confirm they can launch the service menu/access band selection.
I see welshkiwi95 from that reddit stated he couldn't get Shizuku to work due to a VERSION_LOCKED message. For users that already have rooted their phones they wouldn't need a system level shell, wouldn't this be circumvented?
Click to expand...
Click to collapse
Welshkiwi95 is also me (also am not a he ).
I have been able to change my carrier vanity name but it also doesn't work at the same time. Very much thinking we need a new exploit or root. Because as I said in another thread, could be a OneUI issue or a S23 series issue.

Thank you, I've successfully unlocked China 5G bands on 908N with Korean LUC carrier.

Dear All Members,
I'm trying to see if anyone has successfully unlock all the respective LTE Bands for the G998UZKAWZW. I'm currently using the phone in Malaysia on a Malaysian Telco Provider and require the LTE Band 28 to be enabled and following the instructions did not yield any results in enabling the LTE Roaming Bands .
Hope to get some guidance from someone who has managed to enable all the LTE Bands

Neomorpheus8988 said:
Dear All Members,
I'm trying to see if anyone has successfully unlock all the respective LTE Bands for the G998UZKAWZW. I'm currently using the phone in Malaysia on a Malaysian Telco Provider and require the LTE Band 28 to be enabled and following the instructions did not yield any results in enabling the LTE Roaming Bands .
Hope to get some guidance from someone who has managed to enable all the LTE Bands
View attachment 5844895
Click to expand...
Click to collapse
convert your firmware to U1 then follow this https://forum.xda-developers.com/t/...22-series-including-sub-6-and-mmwave.4488435/

deleted

I am on Korean Lg U+, and if i change the CSC to GCF, the Service does not work. How do i fix it?