Develop Bugs

[Q] FIRMWARE UPDATE(which is which)

Hi Guys,
I want to update my current firmware version(2.3.6-DLC1)(Stock) to the latest stock(DXLM3) firmware for my country(Philippines)but i was hesitant which firware to download.
I visited samobile.com and i was confused on what to download on the site. there where 4 stock firmware with same baseband(below).
GT-I8150 Philippines (Smart) 2012 April Android 2.3.6 I8150DXLM3 I8150OLBLD1
GT-I8150 Philippines 2012 April Android 2.3.6 I8150DXLM3 I8150OLBLD1 - for some reason no indicated subscriber
GT-I8150 Philippines (Globe) 2012 April Android 2.3.6 I8150DXLM3 I8150OLBLD1 and
GT-I8150 Philippines (Sun) 2012 April Android 2.3.6 I8150DXLM3 I8150OLBLD1
FYI, im a smart subscriber, but i also have a globe and sun sim which i usually both use, depending on my needs(sun=call)(globe=call and sms my friends)(smart=net,txt and call=1 option).
I have read that there where problems with regards to signal,etc when you have not set the right firmware specific for your country or subscriber, would it be possible to explain what is the difference between on all 4 firmwares?and also which should i choose base on my needs..
thnx in advance^^..

I'm not really sure, but here's my guess:
The firmwares where the operator is indicated, they are "branded" firmware, containing perhaps apps that the operator requested Samsung to include in the phone. This usually go into phones offered by the operator with a service/contract bundle.
The firmware without operater is most likely an "unbranded" firmware, i.e., the firmware used by phones purchased without contract, from a 'neutral' reseller.
The problem with signal is due to incompatible baseband; the baseband is the piece of firmware that communicates with the BTS and/or WiFi Access Points. The Telecommunication Authority of a country may specify a certain behavior (out of several) regarding the communication standard with the BTS / WiFi AP (for example: WiFi Channel Selection, which 'variant' of GSM signaling used, which GSM signaling 'options' are legal, etc etc etc).
From the list of firmwares you gave, I can see that they are all using the exact same baseband: DXLM3. So, there should be no problem using any of them within your country. (Of course, you really should choose the 'unbranded' one to save you from having to deal with annoying operator-specific bloatware)

pepoluan said:
I'm not really sure, but here's my guess:
The firmwares where the operator is indicated, they are "branded" firmware, containing perhaps apps that the operator requested Samsung to include in the phone. This usually go into phones offered by the operator with a service/contract bundle.
The firmware without operater is most likely an "unbranded" firmware, i.e., the firmware used by phones purchased without contract, from a 'neutral' reseller.
The problem with signal is due to incompatible baseband; the baseband is the piece of firmware that communicates with the BTS and/or WiFi Access Points. The Telecommunication Authority of a country may specify a certain behavior (out of several) regarding the communication standard with the BTS / WiFi AP (for example: WiFi Channel Selection, which 'variant' of GSM signaling used, which GSM signaling 'options' are legal, etc etc etc).
From the list of firmwares you gave, I can see that they are all using the exact same baseband: DXLM3. So, there should be no problem using any of them within your country. (Of course, you really should choose the 'unbranded' one to save you from having to deal with annoying operator-specific bloatware)
Click to expand...
Click to collapse
I see..thank you so much for clearing it out..this means that i dont have to reflash a whole firmware since they are using the exact baseband.
the main Reason i posted this, is beacuse im guessing this might be the cause of why my 3g signal is not appearing and i cannot use 3g services, im currently at CM-9(RC5) and 3g is not appering even if i am already registed on the service,already tried to reregister, on/off airplane mode, reset apn, even manually set it but still to no avail..

[iop]wah said:
I see..thank you so much for clearing it out..this means that i dont have to reflash a whole firmware since they are using the exact baseband.
the main Reason i posted this, is beacuse im guessing this might be the cause of why my 3g signal is not appearing and i cannot use 3g services, im currently at CM-9(RC5) and 3g is not appering even if i am already registed on the service,already tried to reregister, on/off airplane mode, reset apn, even manually set it but still to no avail..
Click to expand...
Click to collapse
CM9 does not contain a baseband; perhaps your baseband needs to be upgrade.
@sigprof has extracted and repackaged a whole gaggle of baseband images to allow easy flashing using CWM: http://forum.xda-developers.com/showthread.php?p=36690782
Get one, then flash the baseband right after flashing CM9.
Sent from my GT-I8150 using xda app-developers app

Changing CSC on A520F/DS -- a couple of questions

Hi guys and girls of XDA!
I have recently bought a used A5 2017 Dual SIM on eBay and I am in awe with its battery life even after the Oreo upgrade.
However, Samsung does not sell Dual SIM models here in Germany, my model comes from Iran (CSC: THR)
I have read the forum, but I haven't found answers to my questions.
I want to flash a DBT version onto my phone ans I have a couple of questions.
1) I have a DS model which were never available on a German market. Will Dual SIM work after I flash and will I get updates after I flash?
2) The german version of (mono-SIM) firmware, which is available on Sammobile still has A520FXXU7CRH9 baseband. I have already updated to the -I9 one. Does that mean that I cannot revert back o the H9 and will have to wait until german phones get I9?
3) My phone came with a sticker "Middle Eastern and African SIM only". Both slots work with German (and some other) SIMs as of now. Will this setting revert back and it will be locked to those SIMs, if I change CSC?
4) If I will apply the Combination CSC from Sammobile , will I get access to every region-locked option without tripping knox?
Thanks in advance!
Alex.

Anybody here? up!

I don't know the answers to your specific questions - but if the dual sim (Iran) phone you have works with your german sims why are you trying to reflash it?
Is there a problem or something that is not working?
I live in New Zealand and have an imported UAE (United Arab Emirates) 2017 A5 with dual SIM and it works just fine. I havent tried the second sim, but have heard of other people that have and it works as expected. The phone doesnt have any UAE junkware. You are right - the battery life on this phone is great. I did find the always on display uses more battery that I like though. Really wish they had an option that just turned the AOD on when you got a notification (new email/text/missed call etc) but Samsung don't seem to want to provide useful features like this. I came from a galaxy Note 2 and miss that little notification LED
If it helps, I see that the A520F and A520F/DS do not have different firmware - I have searched and there are plenty of posts on this forum where people have flashed Dual SIM hardware with the 'standard' A520F software and report that the dual SIM functionality works fine.
https://forum.xda-developers.com/samsung-a-series-2017/help/sm-a520f-to-sm-a520f-ds-t3704566
The DS model was never officially sold in new Zealand (the single SIM model was) but I have received the Oreo update and several security updates for my phone anyway since I bought it.

Hi, thanks for your reply!
Is there a problem or something that is not working?
Click to expand...
Click to collapse
VoLTE is not showing up in settings, for instance. I would need this option sometimes.
report that the dual SIM functionality works fine.
Click to expand...
Click to collapse
Thanks for the link.
the battery life on this phone is great.
Click to expand...
Click to collapse
I get 26-28 hours of norml usage.
However one thing that irritates me is why it loses up to 10% over the night? Everything is closed and AOD is off, too. Other than that I had to uninstall Chrome because it literally ate up trice as much battery as everything else added up, including screen.

Not sure about your overnight power loss - sounds a litle high...
I use my phone very little and usually only charge it every 4 or 5 days.
AOD uses more power than I like (I have seen 1% an hour mentioned and that is probably about right), so I switched that off.
Really annoyed that Samsung havent made an AOD setting that only enables the AOD on when there are notifications (Missed call, new messages). I would really find that useful.
Have searched all over but cant find any apps that will do this.

For those interested, here is what happened.
1) I have a DS model which were never available on a German market. Will Dual SIM work after I flash and will I get updates after I flash?
Basically, it is the same model and the same firmware. The "normal" firmware for a non-Dual-SIM market works perfectly with a DS model and gets updates via OTA.
2) The german version of (mono-SIM) firmware, which is available on Sammobile still has A520FXXU7CRH9 baseband. I have already updated to the -I9 one. Does that mean that I cannot revert back o the H9 and will have to wait until german phones get I9?
The main thing is that ninth digit ("7") because it represents the revision of the firmware. As long as it is the same, you can flash it. If not you will get a brick.
3) My phone came with a sticker "Middle Eastern and African SIM only". Both slots work with German (and some other) SIMs as of now. Will this setting revert back and it will be locked to those SIMs, if I change CSC?
It didn`t happen to me.
4) If I will apply the Combination CSC from Sammobile , will I get access to every region-locked option without tripping knox?
I did as follows.
I flashed the DBT firmware from SamMobile and got myself a british code because it is a standard one in this Multi-CSC.
Knox not tripped. But VoLTE and VoWiFi still not working
Then I found the Combination ROM (FACTORY BINARY) with the same revision as the firmware (See question 2 about the "7").
I flashed it, dialed some USSD code. Then menu appeared from which I could choose the product code.
I chose DBT, wiped the data and cache and voila, I had a DBT phone with working VoLTE and VoWiFi otb.
Knox not tripped 0x0 !

ioffer007 said:
For those interested, here is what happened.
1) I have a DS model which were never available on a German market. Will Dual SIM work after I flash and will I get updates after I flash?
Basically, it is the same model and the same firmware. The "normal" firmware for a non-Dual-SIM market works perfectly with a DS model and gets updates via OTA.
2) The german version of (mono-SIM) firmware, which is available on Sammobile still has A520FXXU7CRH9 baseband. I have already updated to the -I9 one. Does that mean that I cannot revert back o the H9 and will have to wait until german phones get I9?
The main thing is that ninth digit ("7") because it represents the revision of the firmware. As long as it is the same, you can flash it. If not you will get a brick.
3) My phone came with a sticker "Middle Eastern and African SIM only". Both slots work with German (and some other) SIMs as of now. Will this setting revert back and it will be locked to those SIMs, if I change CSC?
It didn`t happen to me.
4) If I will apply the Combination CSC from Sammobile , will I get access to every region-locked option without tripping knox?
I did as follows.
I flashed the DBT firmware from SamMobile and got myself a british code because it is a standard one in this Multi-CSC.
Knox not tripped. But VoLTE and VoWiFi still not working
Then I found the Combination ROM (FACTORY BINARY) with the same revision as the firmware (See question 2 about the "7").
I flashed it, dialed some USSD code. Then menu appeared from which I could choose the product code.
I chose DBT, wiped the data and cache and voila, I had a DBT phone with working VoLTE and VoWiFi otb.
Knox not tripped 0x0 !
Click to expand...
Click to collapse
Could you go into more detail, please? What USSD code did you dial?

G975U and G975U1 Firmware Links and Flashing Discussion Here

For those who aren't already aware, G975U is the model number of all of the US carrier versions of the S10+. The G975U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100% interchangeable among these models: any U or U1 firmware version can be flashed to any U or U1 device at any time, assuming that you're not trying to downgrade the bootloader. A "U to U" or "U1 to U1" flash does not require a factory reset, but changing from one firmware to the other will require one. Also, U firmware is identical for the 4 base files (AP, BL, CP, CSC) for each individual build, no matter which carrier it comes from. So if you download 2 different carrier versions of the exact same build, the 4 base files will be identical. Where the firmware differs is in the USERDATA file - that's where the carrier bloatware and customizations reside.
Manual Odin flashing is designed for those who:
- want to manually update to a newer version of U firmware on their U device, either because they don't want to wait for their carrier's OTA or because OTAs aren't working on their device, or a different carrier got a new feature/patch before they did
- want to flash U1 firmware to their U device
- want to convert from U1 firmware to carrier U firmware
- want to convert from one carrier's U firmware (with all apps and bloatware) to a different carrier's U firmware (with all apps and bloatware)
For those who aren't already aware, anyone can now download firmware for almost any Samsung device any time that they want, via the various firmware download tools posted here on XDA like SamFirm or Frija. There are threads and info about them here on XDA so I won't waste time explaining - do a search if you're not already familiar with these tools. But they only provide whatever the latest/newest/current version is - nothing older. I pay for a subscription to a site that gets the official releases (usually) before they hit the firmware download tools, so that's where my files come from.
This is not a "beginner's guide to Odin flashing" -type post/thread, so I won't list basic, step-by-step flashing instructions. My threads are geared towards those who already know what they're doing. If you're new to manually flashing Samsung firmware (or haven't done it in a long time), I recommend you consult one of those "beginner's" guides- there are tons of them here on XDA.
Happy flashing!
U firmware: https://www.androidfilehost.com/?w=files&flid=290649
U1 firmware: https://www.androidfilehost.com/?w=files&flid=290650
Notes:
- I compress extra small for space and bandwith savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc
- I remove the .md5 from each file solely for faster flashing (Odin won't check the file integrity without it). Rest assured, the files are perfectly fine and safe - Odin has a million safechecks built in.
- My naming method for folders is: build - bootloader - Android version
So "SAT - 1 - 9.0" means the full build number ends in SAT, it's bootloader version 1, and it's Android 9.0. When bootloader and Android versions increment, the first build to have those changes will have its folder notated appropriately.
- HOME CSC file keeps data intact; using the other CSC will wipe data. Any zips with "wipe" in the title do not have a HOME CSC included.
- I have identical threads for the S10e and S10 as well
- the correct procedure for switching from one carrier's firmware to another is given in post #25
- You can get USERDATAs from SamFirm for everything but AT&T and Cricket- those files will never be on SamFirm. So in addition to the 5 piece firmware, I'll try to always upload one USERDATA per bootloader increment for those carriers.
- For identifying USERDATAS, and to know what region/CSC to use in the firmware download tools if you're downloading yourself:
AIO = Cricket (not available via firmware download tools)
ATT = AT&T (not available via firmware download tools)
BST = Boost Mobile
CCT = Xfinity Mobile (Comcast)
CHA = Spectrum Mobile (Charter)
SPR = Sprint
TMB = T-Mobile
TMK = Metro PCS
USC = US Cellular
VZW = Verizon
XAA = U1 firmware

This is looking great, was about to pre-order the T Mobile variant, when I remembered that they disable the (Data) Quick Toggle and I have to fiddle around to turn it off, Well, Not the case with the Unlocked version, at least on my Note 9. Anyways, this will come in handy, thanks!

Willy318is said:
This is looking great, was about to pre-order the T Mobile variant, when I remembered that they disable the (Data) Quick Toggle and I have to fiddle around to turn it off, Well, Not the case with the Unlocked version, at least on my Note 9. Anyways, this will come in handy, thanks!
Click to expand...
Click to collapse
Hopefully One UI stays the same. You're welcome

Good to see and will be a good place to hangout! ?

Loved your dedication to uploads on the 9+! Glad to see you here as well! I preodered my ATT 10+ yesterday. Got my mom and two daughters the 10+ / 10e also. Happy to see you'll be providing firmware for the "E" also!

Build SBA added.
Only CCT, VZW, and SPR USERDTAs (for now), but it can be flashed to any S10+

So I flashed this on my new U1 and went to U firmware. My Wifi didn't work after this. I can't connect to any Wifi network... I will try going back to U1 and see if the issue is fixed. Maybe I have a defective phone?

rocket31337 said:
So I flashed this on my new U1 and went to U firmware. My Wifi didn't work after this. I can't connect to any Wifi network... I will try going back to U1 and see if the issue is fixed. Maybe I have a defective phone?
Click to expand...
Click to collapse
Hmmm that's weird. I'm assuming you wiped?

G975U and G975U1 firmware is now live and downloadable in SamFirm. Getting U1 requires manual entry - Auto will not work. U firmware is up for these carriers:
Xfinity Mobile
Spectrum Mobile
Sprint
T-Mobile
US Cellular
Verizon (have to use Manual entry - Auto will not work)
So going forward, I'll only be adding full builds if I can get them before they hit SamFirm, and only if there isn't build for that month already (eg. I won't add any more February builds since SBA is already up.). I will try to stay up to date on USERDATAs for AT&T and Cricket, since AT&T won't let their firmware be put on SamFirm.

Thank you for this. Just flashed my U1 to TMB SBA for video calling feature.

iBowToAndroid said:
G975U and G975U1 firmware is now live and downloadable in SamFirm. U firmware is up for these carriers:
Xfinity Mobile
Spectrum Mobile
Sprint
T-Mobile
US Cellular
Verizon (have to use Manual entry - Auto will not work)
So going forward, I'll only be adding full builds if I can get them before they hit SamFirm, and only if there isn't build for that month already (eg. I won't add any more February builds since SBA is already up.). I will try to stay up to date on USERDATAs for AT&T and Cricket, since AT&T won't let their firmware be put on SamFirm.
Click to expand...
Click to collapse
Is it? I'm not seeing anything.
http://fota-cloud-dn.ospserver.net/firmware/XAA/SM-G975U1/version.xml

YandereSan said:
Is it? I'm not seeing anything.
http://fota-cloud-dn.ospserver.net/firmware/XAA/SM-G975U1/version.xml
Click to expand...
Click to collapse
Not sure what that link is, but U1 is available via the SamFirm tool. I did forget to mention that you have to use Manual input, so i'll edit that part

iBowToAndroid said:
Not sure what that link is, but U1 is available via the SamFirm tool. I did forget to mention that you have to use Manual input, so i'll edit that part
Click to expand...
Click to collapse
That's for auto download. How'd you get the PDA/CSC/Phone?

YandereSan said:
That's for auto download. How'd you get the PDA/CSC/Phone?
Click to expand...
Click to collapse
Manual input, like I said. You have to type in the builds manually

iBowToAndroid said:
Manual input, like I said. You have to type in the builds manually
Click to expand...
Click to collapse
Yes, I realize that. G975U1UEU1ASAU/G975U1OYM1ASAU/G975U1UEU1ASAU
Where are you pulling the values from? Do you have the physical device?

YandereSan said:
Yes, I realize that. G975U1UEU1ASAU/G975U1OYM1ASAU/G975U1UEU1ASAU
Where are you pulling the values from? Do you have the physical device?
Click to expand...
Click to collapse
No. I'm getting them from the place where I get my firmware files from

I have a question and I hope someone can help me. I just purchased a s10 not the plus. And its unlocked which is great but has three UK branding on boot up ect..,
Is it possible to remove this maybe install another rom via oden? And it wouldn't void warranty or enable a security problem on the phone? Any help would be much appreciated

Guessing ATT is late to the party as usual with no ASAB userdata yet? Doesn't appear they've pushed it yet ?

vimto25 said:
I have a question and I hope someone can help me. I just purchased a s10 not the plus. And its unlocked which is great but has three UK branding on boot up ect..,
Is it possible to remove this maybe install another rom via oden? And it wouldn't void warranty or enable a security problem on the phone? Any help would be much appreciated
Click to expand...
Click to collapse
This thread is for U models (Qualcomm). You need to find a thread about the F models (Exynos).
todd3835 said:
Guessing ATT is late to the party as usual with no ASAB userdata yet? Doesn't appear they've pushed it yet ?
Click to expand...
Click to collapse
Anyone can flash any update - USERDATA isn't required unless you're changing from U1 to U, or from one carrier to another.

iBowToAndroid said:
This thread is for U models (Qualcomm). You need to find a thread about the F models (Exynos).
Anyone can flash any update - USERDATA isn't required unless you're changing from U1 to U, or from one carrier to another.
Click to expand...
Click to collapse
Ah ok. On my S9+ I did some Odin flashing and even though I was on the att release, I wasn't getting OTA's. It was odd. Only way to restore OTA updates was flashing with ATT userdata.
On a side note, ATT has pushed the ASAB update for both the S10+ and the S10E.

Question Flashing ROM on Fold 3 - chinese to australian

One of our Chineese suppliers has gifted me a New Fold 3. The issue is the stock Chinese Rom, or rather the restrictions that come with it (nerfing most google based services, and apps i use all the time.). The device is great but restrictions applied give you a feeling of a second class android user, with core sevices absent: Play store, youtube, gmail, maps, chrome, android auto., can't even apporve family link download requests from kids. etc. etc.
I have made the choice i would rather go back to my S21 if i can't resovle this issue, as phone is useless like this.
Advice required on Loading Australian Rom via odin.
The phone model is: SM-F9260 which only seems to have overseas Rom available for download. Can i successfully load a ROM made for model SM-F926B (Australian) on a SM-F9260?
All the how to guides specifically say jou must select the same model number, and i don't want a brick it. Will have mud on my face next time i see the supplier if i have bricked their gift to me.
Any feedback/advice from users with more experience with odin and flashing would be appreciated.

Both are on Snapdragon CPU so shouldn't be any problem to flash it with PIT over the Odin.
But I never done it so I can't give you 100% answer.

streinhardt said:
One of our Chineese suppliers has gifted me a New Fold 3. The issue is the stock Chinese Rom, or rather the restrictions that come with it (nerfing most google based services, and apps i use all the time.). The device is great but restrictions applied give you a feeling of a second class android user, with core sevices absent: Play store, youtube, gmail, maps, chrome, android auto., can't even apporve family link download requests from kids. etc. etc.
I have made the choice i would rather go back to my S21 if i can't resovle this issue, as phone is useless like this.
Advice required on Loading Australian Rom via odin.
The phone model is: SM-F9260 which only seems to have overseas Rom available for download. Can i successfully load a ROM made for model SM-F926B (Australian) on a SM-F9260?
All the how to guides specifically say jou must select the same model number, and i don't want a brick it. Will have mud on my face next time i see the supplier if i have bricked their gift to me.
Any feedback/advice from users with more experience with odin and flashing would be appreciated.
Click to expand...
Click to collapse
Update: The AU version gave me an Auth Failed in Odin. Chances i could have resovled by unlocking the Bootloader which i didn't want to risk tripping the e-fuse. I ended up just using the Taiwan version which had the identical model number, and falls in the same region as China. Odin flashed without complaint. The taiwan version has no restrictions on google services, and once you set the language its hard to tell it from a regular AU one; unless you know what you are looking for that is.

streinhardt said:
Update: The AU version gave me an Auth Failed in Odin. Chances i could have resovled by unlocking the Bootloader which i didn't want to risk tripping the e-fuse. I ended up just using the Taiwan version which had the identical model number, and falls in the same region as China. Odin falshed without complaint. The taiwan version has no restritions on google services, and once you set the language its hard to tell it from a regular AU one; unless you know what you are looking for that is.
Click to expand...
Click to collapse
it's unfortunate currently there is no solution to flash variant

jemfalor said:
it's unfortunate currently there is no solution to flash variant
Click to expand...
Click to collapse
Technically there are ways, just it is very grey as to when/how you trip the e-fuse. Some say if you simply unlock the bootloader and restart, others say when you load a bootloader that doesn't match model numbers, or is older than your current, or isn't offical samsung one. I personally don't know exactly. I do however know that i didn't trip the e-fuse when i loaded the taiwan version, and i didn't have to unlock the bootloader in developer options to achevie this.

streinhardt said:
Technically there are ways, just it is very grey as to when/how you trip the e-fuse. Some say if you simply unlock the bootloader and restart, others say when you load a bootloader that doesn't match model numbers, or is older than your current, or isn't offical samsung one. I personally don't know exactly. I do however know that i didn't trip the e-fuse when i loaded the taiwan version, and i didn't have to unlock the bootloader in developer options to achevie this.
Click to expand...
Click to collapse
nope. I've tried. unlocked bootloader still won't allow you to flash variant

jemfalor said:
nope. I've tried. unlocked bootloader still won't allow you to flash variant
Click to expand...
Click to collapse
oh. Good to know. Just wondering..Did you trip your e-fuse? If so when did it happen? Did you try extracting the PIT file from the CSC and using the PIT tab in odin? with the re-parition option selected?

streinhardt said:
oh. Good to know. Just wondering..Did you trip your e-fuse? If so when did it happen? Did you try extracting the PIT file from the CSC and using the PIT tab in odin? with the re-parition option selected?
Click to expand...
Click to collapse
you won't have the chance to trip. there is some check before the boot image is integrated. so it failed showing some error, auth or secure check failed etc etc.
if you flash variant home csc you will trip

TBH, I consider the Chinese version is the best version above all other region. The dual sim is enable on Chinese version, 512GB is the only available option.
As for google service. You don't need to change the Chinese firmware to Australian to enable it, the GMS is pre-installed. All you need to do is to find a way to install the google series apps as apk by yourself, it would work just fine.

tony_peng said:
TBH, I consider the Chinese version is the best version above all other region. The dual sim is enable on Chinese version, 512GB is the only available option.
As for google service. You don't need to change the Chinese firmware to Australian to enable it, the GMS is pre-installed. All you need to do is to find a way to install the google series apps as apk by yourself, it would work just fine.
Click to expand...
Click to collapse
BTW, the only version that Chinese region Fold 3 can change is the HongKong firmware, all other regions are not available. If you use Chinese region Fold 3 in Australia, the only thing you need to concern is the Samsung Pay, but Samsung Pay is fixed by the region and cannot be changed by switching the regional firmware.

tony_peng said:
TBH, I consider the Chinese version is the best version above all other region. The dual sim is enable on Chinese version, 512GB is the only available option.
As for google service. You don't need to change the Chinese firmware to Australian to enable it, the GMS is pre-installed. All you need to do is to find a way to install the google series apps as apk by yourself, it would work just fine.
Click to expand...
Click to collapse
Each to their own, if you like the chinese version great. I hated it, restrictions in every aspect of the firmware. I personally am unsure how you rate the chinese version better, when it is loaded with restrictions and hard coded settings that can't be changed, or if they can it is really a sub par workaround. Settings that are not present in standard android builds. What exactly does it have extra that makes it better? If you like it thou that is all that matters.
I loaded the taiwan version which yes is really just the hong kong version. No restrictions, no issues. Now it works just like any other standard samsung android build, you get in AU. Yes samsung pay that use the firmware version doesn't work great, but i prefer google pay anyway. No need to stuff around with downloading apk files from third party sites, for core functions. No need to even enable developer tools.

The chinese version sounds like driving a ferrari on a go karting track.....

Can you flash the Chinese or any international dual sim version to work in the US ?

Question Changing CSC for free using SamFW Tool | No Root required! - A brief guide!

As the title suggests, I was able to successfully change the CSC on my factory unlocked (unbranded) Fold 3 - F926B/DS bought in Germany with OXM firmware having Android 13 & one UI 5.0 from EUX to INU csc using SamFW Tool v3.31 in hardly 2-3 mins. Kindly note that I also looked into other options to do this like Samkey tool (paid service) and alliance shield app (which doesn't work anymore) etc before engaging with the SamFW Tool as none were simple/working with no complications whatsoever involved.
My main objective to change the CSC was to enable call recording and couple of other features (including some pleasant surprises listed in the end of the post) which were available in the INU csc with little to no hassle. The process was pretty simple, straight forward and most importantly, FREE . It DOESN'T require any factory reset, flashing of roms or wiping cache partition before or after the process.
The step by step guide process which worked for me is as follows:
STEP 1: Click here - SamFW Tool Download - to download the latest version of SamFW tool.
STEP 2: Remove the sim card and connect your phone to a computer and make sure the phone's drivers are installed.
STEP 3: Unzip the downloaded file. Right click on the file SamFwFRPTool.exe and 'Run as Administrator'.
STEP 4: After the software opens, make sure your phone is detected before proceeding. If its detected, click on ADB tab in the software.
STEP 5: In your phone, go to developer options and enable 'usb debugging'.
STEP 6: In your phone, open phone dialer and type *#0*# to get into test mode. Leave the phone unlocked and keep it aside now.
STEP 7: Click on 'Change CSC' button in the ADB tab of the tool. Now the tool will connect to your phone, check and list the available CSCs which your phone model supports as shown in the pic attached.
STEP 8: Choose a CSC which you wish to change to from the drop down menu in the pop-up window as shown in the pic attached.
NOTE: The tool also has the option to force the phone to accept a CSC not listed/supported as well by manually entering the same. However, I would not recommend doing it if you really wish to get OTA updates and also to evade any unforeseen issues. I must admit, I haven't frankly tried this and do not know what lies in the pandora box to be honest.
STEP 9: After choosing the CSC from the drop down, the tool quickly connects to the phone, changes the CSC and restarts the phone.
STEP 10: After the phone restarts, unlock the phone using your pin/password, insert your simcard, check the change of CSC in software information, disconnect the phone from the computer and also disable the 'usb debugging' in the developer options.
That's it! All done. Phone restarts with the new chosen CSC and the related features will now be active!
BONUS: There is also an option in the ADB tab in the SamFW Tool named 'Battery information' which gives the complete information of the battery status including the 'charge/discharge cycles' along with its temperature, voltage etc. like in the pic attached. Do note that the information shown in the 'Genuine battery' section isn't correct for some reason and always shows as 'NO' for any phone with/without genuine battery.
With my choice of INU csc the following major changes/surprises were noticed over the EUX:
1. Call recording and a couple of other INU specific features are now enabled (google for more info on what csc enables what features).
2. Not sure why but Battery backup has increased significantly after the csc change to INU. SOT (Screen On Time) which has fallen to 3-4 hrs after the OTA update to One Ui 5.0 & Android 13 is now back to 5-7hrs or more.
3. RAM management has definitely got better. With EUX csc it used be around 5-6GB during standby and now its always around 3-4GB when the phone is idle.
4. Instead of 4G or 4G+, now it shows LTE and LTE+.
5. Mobile data speed has increased both in 5G (Jio True5G network) and in LTE+ when compared to EUX CSC.
6. 5G signal strength has improved drastically. Signal loss or switching to 4G+/LTE+ is very low now.
7. 5G to 4G/LTE switching while calls (VoLTE/VoNR) is more seamless now. Latching back onto 5G network after a call is a breeze now unlike earlier with EUX csc.
8. Phone definitely got faster for some reason. Can very much feel the difference when switching between apps, multi-tasking, even opening/closing apps and other day-to-day tasks.
etc...
Haven't tested whether the OTA updates will still get pushed after the change in CSC yet, as my phone is already updated to the latest patch as I write this. Should absolutely work IMO as long as we choose a CSC which the phone supports but in any case will update the thread once the next update via OTA is available/pushed by Samsung.
Disclaimer: Please be informed that all the above information is purely based on experience of using the tool for changing CSC only which worked well for me with my Fold 3. Cannot take responsibility if it doesn't work for you.

Does it work for Fold 4. Want to change CSC from Korean Region to INU (India). Please guide

Sorry, haven't tried it on Fold 4. Logically it shud work, I guess. There is no harm in connecting n checking what CSCs does ur model supports using the tool IMO.

Tried out but it does not work. It shows only the Korean csc. Even that seems to be not changing

Oh k. I think the tool works, else u wudnt b seeing the CSC which ur phone supports.
I have checked sources in the web as well on this and looks like Fold 3 or 4 with Korean CSC supports only CSC from Korea.
I guess u can still force a CSC on to it replacing the Korean one but thats too risky as u will b missing OTA updates and im not aure wat all things it will mess up.

Awesome! It works and it doesn't wipe the device. I just switched from G975U VZW to CCT without any issues.

BlueTR said:
Awesome! It works and it doesn't wipe the device. I just switched from G975U VZW to CCT without any issues.
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Happy to hear that. BTW I also got samsung pay/wallet to work as well by installing its apk file today after changing the system language to a local one specific to the changed CSC i.e., English (India) for INU CSC in my case.

I confirm that it is working on a stock android 13! Great tool!
(It worked on the second try though )

Has anyone tired it on a Fold 4, Mine is XAA and I want to convert it to INU. Haven't been abe to do it as yet.
Let me know if someone finds a way, mine is a US version and I want to convert it to the India CSU.
Thanks in advance

unexpected0ne said:
I confirm that it is working on a stock android 13! Great tool!
(It worked on the second try though )
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Good to know! Just out of curiosity, u tried this on a Fold 3 or Fold 4?

srikanth.addala said:
Good to know! Just out of curiosity, u tried this on a Fold 3 or Fold 4?
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Fold 3, latest official android 13

unexpected0ne said:
Fold 3, latest official android 13
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Oh great. Getting otas after the change?

Does OTA work after change?

Hello, can somebody please briefly summerise the options for switching the CSC/Firmware?
I read other threads and this one and now am confused which method actually would work for me.
My situation: i have a Samsung A52s 5G purchased from Deutsche Telekom in Germany, sold separately, not bundled with a contract.
And i am having a contract with a different carrier on a different network, but a german SIM card.
My phone is configured all english, and i need to keep that.
Because of assumed network optimisations and the problem of delayed updates of "branded" phones, i would like to convert the phone from the current CSC of DTM to the DBT using fimrware (A528BXXS1DVL2/A528BOXM1DVK5/A528BXXU1DVK5/A528BXXS1DVL2), which i hope would link me to updates directly provided by Samsung.
I found "https://forum.xda-developers.com/t/...official-firmware-all-samsung-device.2697238/" and "https://forum.xda-developers.com/t/...-multi-csc-codes.4436853/page-5#post-87485577 ", but i am not sure whther the methods described there only apply for UPDATING (within the same CSC) the phone with non-OTA methods, or whether that also covers SWITCHING the CSC?
In the end i have two questions:
1) So far i believed that "simply" putting an official stock Samsung firmware (multi CSC in my case, containing the DBT, but apparently NOT containing the DTM) would bring me there.
But then i read that this might not be suffficient. Instead i also would have to switch the CSC in my Phone's config, which apparently would require purchasing a license for a Samkey unlock code.
Because otherwise i would not receive any OTA updates once i switched just the firmware.
Is that actually true?
I would prefer not to have to buy a Samkey...
And to make the confusion even bigger: now i read, SamFw Tool would also be an option?
But: is that trustworthy? And: from posts of some of you: this might even obsolete to switch the firmware, do i understand that right?
2) If switching firmware still is required: would using Odin/Heimdall be the only option to switch the firmware, or would adb sideloading do the same job as well? I am asking because i don't have access to a windows machine.
Would be so great if someone of you could untangle my confusion a bit, thank you.

MarkoParkovic said:
Does OTA work after change?
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Did not automatically receive the OTA updates with the recent DVL9 update. However, tried a work around to change the CSC back to EUX via the same tool (which is a 2 min task) to check if I can get OTA again.
And yes it worked! immediately after changing the OTA to its home CSC, was able to see OTA in the updates section of the phone. So, I updated the phone to the latest version (DVL9) and then changed the CSC back to INU after the update . All is well and quick! .

very nice i changed sfr to tur but netflix and always on display app not shown google play so unsupported why idk

burc ugur said:
very nice i changed sfr to tur but netflix and always on display app not shown google play so unsupported why idk
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May be TUR csc has restricted options/features. In my example after I changed to INU csc (India one) all the India related options got automatically activated like call recording, spam filter, samsung pay using cards etc etc. which weren't available with the EUX csc before the change.

srikanth.addala said:
May be TUR csc has restricted options/features. In my example after I changed to INU csc (India one) all the India related options got automatically activated like call recording, spam filter, samsung pay using cards etc etc. which weren't available with the EUX csc before the change.
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Any potential issues using INU csc in the UK? I use Samsung pay already but native call recoding would be really useful for me

srikanth.addala said:
May be TUR csc has restricted options/features. In my example after I changed to INU csc (India one) all the India related options got automatically activated like call recording, spam filter, samsung pay using cards etc etc. which weren't available with the EUX csc before the change.
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edit: excuse me you have play protect certificate? i changed csc samfw topl but now i don't have play protect certificate. Therefore not shown Netflix.
you have this? if you have how can i fix certificate.

burc ugur said:
edit: excuse me you have play protect certificate? i changed csc samfw topl but now i don't have play protect certificate. Therefore not shown Netflix.
you have this? if you have how can i fix certificate.
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Might be worth clearing cache and data from Google play services see if that helps. Having the same device with 2 different cscs might have confused Google
Edit
Any reason your Google play store is out of date or is it connected to your original issue