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 Flashing Question

I recently just bought a S20 Ultra that has a unlockable bootloader. A little while back, I had a Galaxy S9 that I could completely convert the entire device to U1. Is that even possible with this device ? To fully convert the CSC and bootloader ect, to a US model ?

cjegan2008 said:
I recently just bought a S20 Ultra that has a unlockable bootloader. A little while back, I had a Galaxy S9 that I could completely convert the entire device to U1. Is that even possible with this device ? To fully convert the CSC and bootloader ect, to a US model ?
Click to expand...
Click to collapse
That was then. Each model is specific to a region and can not be flash with software from another region. I.E you cannot flash G9880 with firmware from G988U or G988U1 or the other way around.

What exactly changed from the S9 to the S20 that made that impossible ?
west2cool said:
That was then. Each model is specific to a region and can not be flash with software from another region. I.E you cannot flash G9880 with firmware from G988U or G988U1 or the other way around.
Click to expand...
Click to collapse

cjegan2008 said:
What exactly changed from the S9 to the S20 that made that impossible ?
Click to expand...
Click to collapse
Any luck? I just got one in Canada and it only has 3g ad 4g so I was hoping I could flash a csc file.

So I attempted to edit the band config using QPST and QXDM, but I'm very unfamiliar with both programs and how to actually read and write information to the modem using those programs. Definitely not for the average user. Back in the days when devices had ESN numbers, I used to flash software using QPST and QXDM but there is a lot that has changed with those programs, and I wouldn't even know how to do that stuff today. If anyone has any knowledge about those two programs that can help me unlock all the US 5G bands for AT&T and Verizon that would extremely helpful.
dwhite011 said:
Any luck? I just got one in Canada and it only has 3g ad 4g so I was hoping I could flash a csc file.
Click to expand...
Click to collapse

eSIM Activation on SM-G988N (Korean) by changing CSC. If Possible ?

I'm struck. Could you please give me some help. I have imported SM-G988N Korean version in India because of Snapdragon. Initially I thought its a single physical SIM phone and eSIM can be activated by putting a request to my carrier since they have eSIM support. My carrier converted my one physical sim to eSIM but it never got activated on the phone. I rooted and If flash G9880 (HongKong) CSC will it get support of eSIM. ?? I desperately need second number activation or else I have to change my ULTRA as daily driver.
Its so important for me to stick to Ultra that I had to create a new thread for getting clarification/Help

G9880 (HongKong) No eSim Brother.

runnary said:
G9880 (HongKong) No eSim Brother.
Click to expand...
Click to collapse
Thanks for info. Which Snapdragon version CSC will have eSim. ?

jsbutran said:
Thanks for info. Which Snapdragon version CSC will have eSim. ?
Click to expand...
Click to collapse
None and you wouldn't be able to change to any other csc other than KOO, KTC, LUC and SKC which are all Korean csc.

Question: Convert US unlocked to EU unlocked

Hello flashers.
Question here.
I have a US unlocked version G781U1/DS. Is it possible to convert to G781B/DS? The reason for this is European B version has dual sim support, whereas apparently it is disabled on US models. Otherwise why would Samsung put DS into model name for U1 and snap in a dual sim tray?
I think both devices have same hardware specs.
Will it work?
Thanks.

No, it will not.

stefilie said:
Hello flashers.
Question here.
I have a US unlocked version G781U1/DS. Is it possible to convert to G781B/DS? The reason for this is European B version has dual sim support, whereas apparently it is disabled on US models. Otherwise why would Samsung put DS into model name for U1 and snap in a dual sim tray?
I think both devices have same hardware specs.
Will it work?
Thanks.
Click to expand...
Click to collapse
Why would you want to do this? The U1 version is a multi-CSC firmware and should work as needed in any country. I have not been able to secure a FW set for the S20 FE5G as of yet, but if it was available, it could be confirmed or denied that the specific CSC you need is contained within. Again, I'm rather curious about the issue you're facing to lead you to want to do this. Technically, you should be able to flash any Snapdragon CSC that is built for the same device. That is speculative as ive not confirmed this, but that is how it has been historically from the S8 onward

I have tried all CSC versions available in CSC menu, none of them enables dual sim. Note CSC available are most for US carriers like TMB and ATT. There is XAA (international apparently) available as well but does not enable dual sim either.

Enable eSIM feature on Samsung S20+ SM-G986W

Hello Experts,
I have a Samsung Galaxy S20+ 5G purchased in Canada and not associated with any service provider. I am planning to use it in India and I have 2 SIM's in India. Samsung Canada Firmware does not have eSIM feature and there is no SIM Card Manager function in settings. Can I flash any other region firmware and have the eSIM feature enabled ?

The question should b e, does the snapdragon variant support e-sim, cos am stuck with a S20 +5g purchased in usa but no e-sim

Galaxy devices in India are typically Exynos variants which offer eSIM functionality. Flashing different firmware on a Galaxy S Series Snapdragon variant won't enable eSIM. None of Galaxy's Snapdragon variants except The Fold are eSIM capable.

phrozenwire said:
Hello Experts,
I have a Samsung Galaxy S20+ 5G purchased in Canada and not associated with any service provider. I am planning to use it in India and I have 2 SIM's in India. Samsung Canada Firmware does not have eSIM feature and there is no SIM Card Manager function in settings. Can I flash any other region firmware and have the eSIM feature enabled ?
Click to expand...
Click to collapse
Hi I have a same model Canadian S20+ 5G , G986W , I'm from india can u plssss help to enable LTE+ , it's shows only LTE , how to enable LTE+ ???

I would like to know how to enable esim in
СМ-G986W as well. Maybe by changing region or something else ​

Hi guys, I finally got rid of my G986W. I've converted it to G986U1:
Firmware: https://samfw.com/firmware/SM-G986U1/TMB/G986U1UES3GWA2
SAMFW Odin Flash: https://samfw.com/blog/samfw-frp-tool-1-0-remove-samsung-frp-one-click
Just flash firmware with included Odin Flash (Add all files except HOME_CSC and don't use USERDATA.
I've flashed and my S20+ reborn as a true phone with eSim functionality and etc.

0x0null said:
The question should b e, does the snapdragon variant support e-sim, cos am stuck with a S20 +5g purchased in usa but no e-sim
Click to expand...
Click to collapse
It does, bit esim is disabled in Canada, by soft. Instal U1(xaa) instead of W soft, esim will be enabled.

Have u tried installing a Esim? Is it working fully?
MGoris said:
Hi guys, I finally got rid of my G986W. I've converted it to G986U1:
Firmware: https://samfw.com/firmware/SM-G986U1/TMB/G986U1UES3GWA2
SAMFW Odin Flash: https://samfw.com/blog/samfw-frp-tool-1-0-remove-samsung-frp-one-click
Just flash firmware with included Odin Flash (Add all files except HOME_CSC and don't use USERDATA.
I've flashed and my S20+ reborn as a true phone with eSim functionality and etc.
Click to expand...
Click to collapse

Sureshtuty said:
Have u tried installing a Esim? Is it working fully?
Click to expand...
Click to collapse
Works without any problems, especially since I'm in Europe.

0x0null said:
The question should b e, does the snapdragon variant support e-sim, cos am stuck with a S20 +5g purchased in usa but no e-sim
Click to expand...
Click to collapse
all s20+ 5g should support esim. (esim is inegrated to a snapdragon chip) BUT some of them are dissabled by software. but such a models like 986U or 986V, for example, were lock by operator and you could not install a software from U1, that includes esim support. i might be wrong. i installed U1 soft to a 986W model (that was without esim support. Now, esim works perfect. s20+ updates online. samsung pay works correct, knox works as well)

RR0077 said:
all s20+ 5g should support esim. (esim is inegrated to a snapdragon chip) BUT some of them are dissabled by software. but such a models like 986U or 986V, for example, were lock by operator and you could not install a software from U1, that includes esim support. i might be wrong. i installed U1 soft to a 986W model (that was without esim support. Now, esim works perfect. s20+ updates online. samsung pay works correct, knox works as well)
Click to expand...
Click to collapse
I have Lost 2nd Physical sim option after update to OneUI 5.1, on my 988B, before the update i was using both physical sims ok. Now only 1 physical sim and 1 eSim option is there. Please help

I am trying to flash a U1 firmware. I keep getting Fail (Auth) on Odin. I'm using a patched ver 3.14.1 of Odin.
I've selected USB debugging on my phone. What am I missing?
Can anyone help?