Unlock Sprint Samsung s20 - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

Hi
My phone model is G-981U (s20) and has a sprinit carrier lock.
If I install the same SPR(sprint) firmware of the G-981U1 model and change the csc using the tool, can I remove the carrier lock?

qazaq109 said:
Hi
My phone model is G-981U (s20) and has a sprinit carrier lock.
If I install the same SPR(sprint) firmware of the G-981U1 model and change the csc using the tool, can I remove the carrier lock?
Click to expand...
Click to collapse
In order to unlock this device, you must first flash the SPR U package back to the device. If it already it on Sprint U package then follow ----> Then under settings>software update>UICC unlock. This will work if the phone is deemed able to unlock on the Sprint Servers.

Related

[Q] SIM Unlock SGH M919 Outside US which was never activated on Tmobile Network

Hello All,
I got a t-mobile s4 from USA which was paid in full and never activated on any network in USA. I am now trying to use an Airtel Sim Card in India and it shows that its SIM Unlocked. On contacting the T-Mobile support they are saying that they cant provide an unlock code because the device was never activated on their network.
I am stuck because all websites providing unlock codes work on the same precondition that the device was earlier activated in a T-Mobile network. I am also not able to get into service mode and apply the sim unlocking fix as suggested in few posts.
Please provide help and suggest me the options. I am not afraid to shell some more bucks to make it work but i need assurity that the method would work.
Is there a way that i can try which doesnt require t-mobile network at all???
My android version is 4.4.2 and device has been rooted now.
To use service mode to unlock, you need to flash MDL modem first. After unlocking, you should be able to flash the latest modem back retaining the lock.
Have you checked if the region lock away app works?
This thread has some info http://forum.xda-developers.com/showthread.php?t=2654058
Sent from my SAMSUNG-SGH-I337 using Tapatalk
jmjoyas said:
To use service mode to unlock, you need to flash MDL modem first. After unlocking, you should be able to flash the latest modem back retaining the lock.
Have you checked if the region lock away app works?
This thread has some info http://forum.xda-developers.com/showthread.php?t=2654058
Sent from my SAMSUNG-SGH-I337 using Tapatalk
Click to expand...
Click to collapse
Regionlockaway apps doesnt work...I am outside USA having no access to the T-Mobile network and was wondering whether the steps suggested by you will allow me to unlock the device from service mode despite having no cellular service?
gargyagotra said:
Regionlockaway apps doesnt work...I am outside USA having no access to the T-Mobile network and was wondering whether the steps suggested by you will allow me to unlock the device from service mode despite having no cellular service?
Click to expand...
Click to collapse
As far as I know, the service mode unlock disables the carrier check and doesnt require cellular service.
Also, the S4s are also region locked. They get region unlocked when activated and used on the carrier network. So, your phone requires both the sim and region unlock.
jmjoyas said:
As far as I know, the service mode unlock disables the carrier check and doesnt require cellular service.
Also, the S4s are also region locked. They get region unlocked when activated and used on the carrier network. So, your phone requires both the sim and region unlock.
Click to expand...
Click to collapse
Thanks for your response. I am a newbie so just confirming the steps that i need to take to unlock the device:-
a) SInce i am on 4.4.2 with baseband as M919UVUF9B4 i would need to downgrade it to 4.2 stock version using the link you have recommended above.
b) Once i am on the 4.2 version i can then flash MDL modem to sim unlock
c) Then use region lock away tool to region unlock.
d) Upgrade it again to 4.4.2 and use my device freely.
Let me know if i got it right
gargyagotra said:
Thanks for your response. I am a newbie so just confirming the steps that i need to take to unlock the device:-
a) SInce i am on 4.4.2 with baseband as M919UVUF9B4 i would need to downgrade it to 4.2 stock version using the link you have recommended above.
b) Once i am on the 4.2 version i can then flash MDL modem to sim unlock
c) Then use region lock away tool to region unlock.
d) Upgrade it again to 4.4.2 and use my device freely.
Let me know if i got it right
Click to expand...
Click to collapse
For the service menu to work, all you need is the MDL modem. You do not need to downgrade everything. You should be able to find a way to flash the modem alone.
jmjoyas said:
For the service menu to work, all you need is the MDL modem. You do not need to downgrade everything. You should be able to find a way to flash the modem alone.
Click to expand...
Click to collapse
Thanks for confirming. However, i am unable to find any thread tutorial which talks about flashing NB4 modem back to MDL on NB4 bootloader. Most of the threads talk about flashing modems which are prior to 4.3 and doesnt serve my purpose as in am on the latest bootloader.
Please help in providing any thread link or steps to perform the flashing.
Thanks Again!

SM-G955U to SM-G955U1

I noticed after rooting that I went from firmware U to U1.
I guess my question is can I use normal Odin to flash SM-G955U1 firmware and have my phone unlocked so I can use my goole Fi sim card?
Kaldrick said:
I noticed after rooting that I went from firmware U to U1.
I guess my question is can I use normal Odin to flash SM-G955U1 firmware and have my phone unlocked so I can use my goole Fi sim card?
Click to expand...
Click to collapse
Flashing the firmware alone will not unlock the phone. You must have the carrier it is attached to unlock it first.
Milly7 said:
Flashing the firmware alone will not unlock the phone. You must have the carrier it is attached to unlock it first.
Click to expand...
Click to collapse
Hi, could i do the reverse? i have a g955u1 Us version, can install the ATT firmware to it? will it work?
nlesir said:
Hi, could i do the reverse? i have a g955u1 Us version, can install the ATT firmware to it? will it work?
Click to expand...
Click to collapse
When you buy a Galaxy S8 Plus at a store in the usa like Best buy or other, you will get the model SM-G955U1 which is unlocked and it works will att and tmobile sim cards, i have that model and works fine with Tmobile.
S8+ # labels
-G955U locked to USA carriers version
-G955U1 is the Unlocked version
Kaldrick said:
I noticed after rooting that I went from firmware U to U1.
I guess my question is can I use normal Odin to flash SM-G955U1 firmware and have my phone unlocked so I can use my goole Fi sim card?
Click to expand...
Click to collapse
You can use ODIN to flash U1 firmware for a bloatfree experience, but that WILL NOT carrier unlock your device. It has to be unlocked by the carrier. Either by calling them direct or paying for an unlock service. But if your phone is paid off, your carrier will unlock it for free.
nlesir said:
Hi, could i do the reverse? i have a g955u1 Us version, can install the ATT firmware to it? will it work?
Click to expand...
Click to collapse
Of course. Search the forums and carrier switching thread.
iSeven77 said:
When you buy a Galaxy S8 Plus at a store in the usa like Best buy or other, you will get the model SM-G955U1 which is unlocked and it works will att and tmobile sim cards, i have that model and works fine with Tmobile.
Click to expand...
Click to collapse
That's a half truth. You CAN purchase the U1 model at Best Buy, but only if you specifically ask for it. They also sell the carrier versions for ATT, Verizon, and I believe Sprint.
The U1 can also be purchased directly from Samsung, as well as the carrier versions.
Yes the U1 works with ALL major US carriers. I.e. Verizon, Sprint, ATT, T-Mobile, US Cellular, and all their MVNOs.
You can try my post i would like to help you
Mr. Orange 645 said:
You can use ODIN to flash U1 firmware for a bloatfree experience, but that WILL NOT carrier unlock your device. It has to be unlocked by the carrier. Either by calling them direct or paying for an unlock service. But if your phone is paid off, your carrier will unlock it for free.
Of course. Search the forums and carrier switching thread.
That's a half truth. You CAN purchase the U1 model at Best Buy, but only if you specifically ask for it. They also sell the carrier versions for ATT, Verizon, and I believe Sprint.
The U1 can also be purchased directly from Samsung, as well as the carrier versions.
Yes the U1 works with ALL major US carriers. I.e. Verizon, Sprint, ATT, T-Mobile, US Cellular, and all their MVNOs.
Click to expand...
Click to collapse
i keep on getting this error in odin <ID:0/004> abl.elf
leonardojt said:
i keep on getting this error in odin <ID:0/004> abl.elf
Click to expand...
Click to collapse
use latest Odin 3.13.1
TQ
ikrishaary said:
use latest Odin 3.13.1
TQ
Click to expand...
Click to collapse
Thanks, it worked
I have the U1 and flashed U firmware, and was trying to go back to U1 and Odin is being a pita about it.
Any pointers on how to get my U1 phone that thinks it's a U now, to get back to being a U1? Get a binary error when I try. I have both firmware. U oddly says it's an XAS file (phone still shows being XAA, but U1 is an XAA file, both from sammob, and both are latest updates, Dec. 1st.).
h2o2h said:
I have the U1 and flashed U firmware, and was trying to go back to U1 and Odin is being a pita about it.
Any pointers on how to get my U1 phone that thinks it's a U now, to get back to being a U1? Get a binary error when I try. I have both firmware. U oddly says it's an XAS file (phone still shows being XAA, but U1 is an XAA file, both from sammob, and both are latest updates, Dec. 1st.).
Click to expand...
Click to collapse
If your getting a binary error either you are 1 of 3 things. Using older firmware than on the device. You need to flash the combination file then subsequent firmware. Like u1 combo u. Or u combo u1. Or wrong odin. 3.13b
Sir pls help for me my samsung galaxy s8 plus model no is (SM-G955U) can i flashed firmware like (SM-G955F) pls help me.
WasifMeraj said:
Sir pls help for me my samsung galaxy s8 plus model no is (SM-G955U) can i flashed firmware like (SM-G955F) pls help me.
Click to expand...
Click to collapse
No you cannot.
TheMadScientist said:
No you cannot.
Click to expand...
Click to collapse
Thank you sir for replying.

How can I update my unlocked AT&T S9 (SM-G960U)?

Hi. I have an AT&T-branded unlocked S9 (SM-G960U) and I have not been receiving software updates. The date of the installed security patch is Nov. 1, 2018, and I'm still on Android 8.0. When I check for updates, it says that my phone is up-to-date. My current carrier is outside the USA. I have also tried updating via Smart Switch but it also says my phone is up-to-date.
Is there any way I could get the Android Pie update?
Thanks for the help!
Ocelot584 said:
Hi. I have an AT&T-branded unlocked S9 (SM-G960U) and I have not been receiving software updates. The date of the installed security patch is Nov. 1, 2018, and I'm still on Android 8.0. When I check for updates, it says that my phone is up-to-date. My current carrier is outside the USA. I have also tried updating via Smart Switch but it also says my phone is up-to-date.
Is there any way I could get the Android Pie update?
Thanks for the help!
Click to expand...
Click to collapse
Flash with odin and get the firmware from sammobile or Frija app on xda
Instructions all over XDA and sammobile
*Detection* said:
Flash with odin and get the firmware from sammobile or Frija app on xda
Instructions all over XDA and sammobile
Click to expand...
Click to collapse
Frija??
aaronisham95 said:
Frija??
Click to expand...
Click to collapse
https://forum.xda-developers.com/galaxy-s9/how-to/tool-frija-samsung-firmware-downloader-t3910584
*Detection* said:
Flash with odin and get the firmware from sammobile or Frija app on xda
Instructions all over XDA and sammobile
Click to expand...
Click to collapse
I have considered using Odin but I can't find the AT&T firmware on Sammobile :/
Ocelot584 said:
I have considered using Odin but I can't find the AT&T firmware on Sammobile :/
Click to expand...
Click to collapse
You can use the U1 firmware (Unbranded) you don't need the carrier one, any for the U will work, and U1
*Detection* said:
You can use the U1 firmware (Unbranded) you don't need the carrier one, any for the U will work, and U1
Click to expand...
Click to collapse
When I check out the U1 firmwares, I see different variants listed (ATT, TMB, etc.). As you said, the U1 firmware is unbranded, so why are there carrier-specific variants?
Ocelot584 said:
When I check out the U1 firmwares, I see different variants listed (ATT, TMB, etc.). As you said, the U1 firmware is unbranded, so why are there carrier-specific variants?
Click to expand...
Click to collapse
XAA is the one you want for unbranded, all the info you need is already here on XDA
https://forum.xda-developers.com/galaxy-s9/how-to/how-to-flash-u1-firmware-to-device-t3765200/page10
Ocelot584 said:
When I check out the U1 firmwares, I see different variants listed (ATT, TMB, etc.). As you said, the U1 firmware is unbranded, so why are there carrier-specific variants?
Click to expand...
Click to collapse
*Detection* said:
XAA is the one you want for unbranded, all the info you need is already here on XDA
https://forum.xda-developers.com/galaxy-s9/how-to/how-to-flash-u1-firmware-to-device-t3765200/page10
Click to expand...
Click to collapse
in short, the U1 is a debloated version of stock without the carrier junk. The different iterations will have different modem files that are intended to work best with the respective markets they are built for, globally speaking. Samsung stopped making a separate version for the GSM carriers in the USA with the S8 which is why all the stock image files are now cross compatible. They technically always were, its just that theyre far more interchangable now due to this physical difference no longer existing
*Detection* said:
XAA is the one you want for unbranded, all the info you need is already here on XDA
https://forum.xda-developers.com/galaxy-s9/how-to/how-to-flash-u1-firmware-to-device-t3765200/page10
Click to expand...
Click to collapse
Thanks! :good:
youdoofus said:
in short, the U1 is a debloated version of stock without the carrier junk. The different iterations will have different modem files that are intended to work best with the respective markets they are built for, globally speaking. Samsung stopped making a separate version for the GSM carriers in the USA with the S8 which is why all the stock image files are now cross compatible. They technically always were, its just that theyre far more interchangable now due to this physical difference no longer existing
Click to expand...
Click to collapse
So do you mean that the different carrier versions of U1 firmware don't have carrier apps, but have files that make the phone more compatible with the carrier's network?
It seems as though AT&T can only send updates over their network, which I don't have access to because I'm outside the US. If I change my firmware to U1, would I then receive updates OTA in the future directly from Samsung?
Ocelot584 said:
It seems as though AT&T can only send updates over their network, which I don't have access to because I'm outside the US. If I change my firmware to U1, would I then receive updates OTA in the future directly from Samsung?
Click to expand...
Click to collapse
Yes
Ocelot584 said:
So do you mean that the different carrier versions of U1 firmware don't have carrier apps, but have files that make the phone more compatible with the carrier's network?
Click to expand...
Click to collapse
they have very minimal bloatware, they might include carrier apps, but very few. They usually have carrier specific radio firmware to allow the phone to operate best on that specific network, yes.
i would flash one in the very near future myself, but im about to head to Mexico on vacation, so im a tad paranoid to do so. Ill do it when i get back tho. By the end of this month, ill be running a U1 firmware set
Hey guys hope u r all good I'm new on this forum so can anyone please help me
So I have a Tmobile carrier locked samsung s9 (SM-G960U) and I also checked that can I unlock it officially and it says Tmobile have a device unlock app which unlock your phone by permanently unlocking it i searched my app and I had the Device unlock app from Tmobile i opened the app and followed the instructions and when I clicked permanent unlock it took some time and after few secs I said unlocked approved u have to restart your device to apply changes and when I restarted the phone the device unlock app was disabled by itself and my device was still carrier locked and when I re-enable the app from app manager it said it said u have to restart your device again the charges has not been done i tried it again but it goes in loop i also factory reset my device and tried but its still the same . So the question is can I install a global firmware or an unlocked firmware on my s9 (SM-G960U) or how can I unlock the device officially cuz I checked the phone its is not blacklisted and fully paid so what should I do plz help and I'm from Pakistan do I can't go to a Tmobile store coz we don't have there service here . Thanks
Edit : and can you guys also tell me if I'm willing to flash my s9 to an unlocked firmware do I need to enable oem unlocking if yes then how can l enable it I don't have the oem unlock option in my Developer mode
Sam1246 said:
Hey guys hope u r all good I'm new on this forum so can anyone please help me
So I have a Tmobile carrier locked samsung s9 (SM-G960U) and I also checked that can I unlock it officially and it says Tmobile have a device unlock app which unlock your phone by permanently unlocking it i searched my app and I had the Device unlock app from Tmobile i opened the app and followed the instructions and when I clicked permanent unlock it took some time and after few secs I said unlocked approved u have to restart your device to apply changes and when I restarted the phone the device unlock app was disabled by itself and my device was still carrier locked and when I re-enable the app from app manager it said it said u have to restart your device again the charges has not been done i tried it again but it goes in loop i also factory reset my device and tried but its still the same . So the question is can I install a global firmware or an unlocked firmware on my s9 (SM-G960U) or how can I unlock the device officially cuz I checked the phone its is not blacklisted and fully paid so what should I do plz help and I'm from Pakistan do I can't go to a Tmobile store coz we don't have there service here . Thanks
Edit : and can you guys also tell me if I'm willing to flash my s9 to an unlocked firmware do I need to enable oem unlocking if yes then how can l enable it I don't have the oem unlock option in my Developer mode
Click to expand...
Click to collapse
https://www.t-mobile.com/responsibility/consumer-info/policies/sim-unlock-policy
Please read this, there might be some restrictions still applied to your phone.
Unlock app requires a TMobile account at least.

Flashing Verizon Samsung Note 10 plus N975U to U1 Firmware

Hi guys I got a Verizon N975U note 10 plus and its stuck on Verizon I'm trying to flash it with U1 so I can pop a sim in and changes it to that carrier. Do I just need to flash it with the U1 file here https://androidfilehost.com/?w=files&flid=297980 or will it need something special the build # is SQS2ASJ8
johntudd said:
Hi guys I got a Verizon N975U note 10 plus and its stuck on Verizon I'm trying to flash it with U1 so I can pop a sim in and changes it to that carrier. Do I just need to flash it with the U1 file here https://androidfilehost.com/?w=files&flid=297980 or will it need something special the build # is SQS2ASJ8
Click to expand...
Click to collapse
Can't say for sure it would work on U firmware (lack of first hand experience to verify) as it would for U1.... As long as the phone is network/sim unlocked then you should be able to just put the new sim card in it (and the phone will read the sim card settings and apply them).
Flashing the U1 firmware instructions on flashing U1 firmware have been at link below (bottom of first post). You can get the firmware from that thread also.
https://forum.xda-developers.com/showpost.php?p=80072192&postcount=1
Of course keep in mind that none of this will matter unless the phone is sim/network unlocked. As long as you meet the requirements from Verizon (or the phone was blacklisted for either non payment, lost/stolen or a warranty/insurance exchange that wasn't sent in) then this shouldn't be an issue.
its locked to Verizon at the moment when I put a sim in it will work for a bit then say its not allowed to use another carriers sim at this time.
johntudd said:
its locked to Verizon at the moment when I put a sim in it will work for a bit then say its not allowed to use another carriers sim at this time.
Click to expand...
Click to collapse
Either wait until the phone is able to be unlocked by Verizon, or call them and request that they unlock it for you. Until that happens you will not be able to use a non-verizon sim card.
I would also advise keeping the U firmware for Verizon installed and not flashing the U1 firmware, as the Verizon sim/network unlock requires the carrier firmware... At least that is what I am gathering from various discussions/threads.
johntudd said:
Hi guys I got a Verizon N975U note 10 plus and its stuck on Verizon I'm trying to flash it with U1 so I can pop a sim in and changes it to that carrier. Do I just need to flash it with the U1 file here https://androidfilehost.com/?w=files&flid=297980 or will it need something special the build # is SQS2ASJ8
Click to expand...
Click to collapse
Is your phone carrier locked to Verizon? Has it been activated on Verizon's service for 30 days? If not, I'm pretty sure firmware flashing won't help anything. I'm on a Verizon MVNO and they wouldn't even unlock it for me to use on their own network. I had to activate with them for 30 days.
However, now that mine is unlocked, it's still locked down to Verizon in a lotof ways. My SIM card for my current carrier can't apply an APN, for example, so I have to do it manually. I'm contemplating flashing U1 to fix that issue (I hope).
I have a very similar situation. I bought a Note 10+ N975U (Verizon Unlocked) and I want to take it to U1 and then maybe to Sprint. I tried to go to the OP here and follow instructions. So I downloaded and selected all the files for U1 and apparently I did the "no-no" and got stopped with the SW Rev Check Fail : abl Fused 2 > Binary 1. I looked at what my phone is on and it is the SJ8 (November?) from Verizon. I'm guessing that means the BL file (bootloader?) in the U1 folder (SGO?) is older than what is on my phone? What do I need to do differently? I already tried without selecting the BL file, but it still gives the same error. Any help is appreciated! Thanks in advance!
baumanbt said:
I have a very similar situation. I bought a Note 10+ N975U (Verizon Unlocked) and I want to take it to U1 and then maybe to Sprint. I tried to go to the OP here and follow instructions. So I downloaded and selected all the files for U1 and apparently I did the "no-no" and got stopped with the SW Rev Check Fail : abl Fused 2 > Binary 1. I looked at what my phone is on and it is the SJ8 (November?) from Verizon. I'm guessing that means the BL file (bootloader?) in the U1 folder (SGO?) is older than what is on my phone? What do I need to do differently? I already tried without selecting the BL file, but it still gives the same error. Any help is appreciated! Thanks in advance!
Click to expand...
Click to collapse
The bootloader of the U1 firmware you were trying to flash is lower then what is currently on your phone. So yes you are correct that is the no-no. Also you can not skip the bootloader file when flashing, so that wouldn't have worked.
If you read through that thread you will have found others asking how to go from U to U1 firmware. Also the error within regards to trying to flash a lower bootloader version firmware was also asked and answered. I would encourage you to browse that thread and the Q&A forum because this process has been discussed on more then one occasion... It might contain helpful/useful info for you.
In short you need to get a newer firmware release. Using samfirm or frija apps, or the sammobile website look for the firmware your seeking. Google searching will show you how to obtain samfirm, frija is posted the forum here if I recall correctly.
For U1 the model is SM-N975U1 and the region is XAA.

Need help network unlocking, flashed to stock

I got a new phone, the LM-G820UM AT&T version. I followed this guide: https://forum.xda-developers.com/t/tutorial-crossflash-bypass-opid-mismatched-error.4345963/ to flash the stock firmware. With my SIM card in it says "network locked", it doesn't prompt for the unlock code. I have the unlock code and I've tried the various unlock commands (2945#*71001# and 2945#*20001#), but nothing comes up when I do these. Do I need to get it back to the AT&T firmware to be able to unlock it? If so, how can I do this?
gunnerone007 said:
I got a new phone, the LM-G820UM AT&T version. I followed this guide: https://forum.xda-developers.com/t/tutorial-crossflash-bypass-opid-mismatched-error.4345963/ to flash the stock firmware. With my SIM card in it says "network locked", it doesn't prompt for the unlock code. I have the unlock code and I've tried the various unlock commands (2945#*71001# and 2945#*20001#), but nothing comes up when I do these. Do I need to get it back to the AT&T firmware to be able to unlock it? If so, how can I do this?
Click to expand...
Click to collapse
wow, yeah, that's unfortunate. First, yes, it's the at&t firmware that the unlock code works with, not any other firmware.
second, at&t doesn't make their kdz available, so you have no easy way to get back to their firmware.
you might get lucky and find someone who has backed up all their partitions from at&t. Then u would flash ea one back via qfil.
Important lesson: don't buy a locked phone. if u get a locked phone, don't to anything to the firmware until u unlock the phone.
cheers
@AsItLies would this phone work in it's current state with AT&T?
gunnerone007 said:
@AsItLies would this phone work in it's current state with AT&T?
Click to expand...
Click to collapse
To the best of my knowledge, no. At&t is one of the carriers that has restrictions for their networks. Last I read (have never used them personally), they only allow phones that have their IMEI (they check that), and it's using their ROM, to access volte and vowifi.
so, would it work? yes and no. Volte and Vowifi may or may not be important to you.
Additionally, I'm absolutely no expert with at&t, so u might just try and find out, my info could be outdated.

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