I was on AT&T network then i unlocked my phone to use on T-mobile. I want to flash my phone to latest android 6 my question is will i have to unlock it again after i flash to latest firmware? Thank you
Nevermind i figured it out.
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hello everyone! i have galaxy s6 g920t variant i mistakenly flashed cellular south firmware on it but now when i want to reflash tmobile firmware it is showing an error sw check failed device 5 binary 4 plz help
Plzzz help guys
I think after flashing cellular south firmware it is now carrier locked plz help me plzzzzzz guys
Navedsid said:
I think after flashing cellular south firmware it is now carrier locked plz help me plzzzzzz guys
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Yes, you should be seeing a "enter code" sim lock screen. T-mobile uses a unlock app. if your phone was unlocked before on t-mobile it can be unlocked after you flash back to t-mobile firmware.(and may need to run the unlock app).
I have gone back and fort on 2 of my SM-G920T phones between t-mobile and other firmware including the metro PCS SM-G920T1 one so it should work to go back.
Sounds like you need to re-download the stock t-mobile firmware and flash in odin.
[email protected] said:
Yes, you should be seeing a "enter code" sim lock screen. T-mobile uses a unlock app. if your phone was unlocked before on t-mobile it can be unlocked after you flash back to t-mobile firmware.(and may need to run the unlock app).
I have gone back and fort on 2 of my SM-G920T phones between t-mobile and other firmware including the metro PCS SM-G920T1 one so it should work to go back.
Sounds like you need to re-download the stock t-mobile firmware and flash in odin.
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i have managed to get the phone sim unlocked but the firmware is still DPL1 of cellular south.... if i update the firmware of the device back to tmobile will i have to unlock it again or not... plz help i have paid INR 1800 to get this cellular south ****ty firmware unlocked i dont want to pay again for the same ****... PLZ help
Navedsid said:
i have managed to get the phone sim unlocked but the firmware is still DPL1 of cellular south.... if i update the firmware of the device back to tmobile will i have to unlock it again or not... plz help i have paid INR 1800 to get this cellular south ****ty firmware unlocked i dont want to pay again for the same ****... PLZ help
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99% sure will be locked again once you go back to t-mobile as they use an app to authenticate.
[email protected] said:
99% sure will be locked again once you go back to t-mobile as they use an app to authenticate.
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but i have unlocked the phone on tmobile rom... but firmware is of DPL1 of cellular south ... i have flashed twrp on it and then Twisted-MM-Base which had the tmobile system... the guy at the shop unlocked but dont know how bcz as u knw it didnt asked for any code or such thing... now my phone is network unlocked i have installed XtreStoLite-ROM-3.3.1-DPDP no probs till now... but i wanna go back to tmobile firmware but i fear that i will have to get it unlocked again... however before i flashed this DPL1 my phone was unlocked on tmobile firmware.... So kinda plz tell if i flash MY EPF1 Firmware,,, will i face any unlocking issue
Navedsid said:
but i have unlocked the phone on tmobile rom... but firmware is of DPL1 of cellular south ... i have flashed twrp on it and then Twisted-MM-Base which had the tmobile system... the guy at the shop unlocked but dont know how bcz as u knw it didnt asked for any code or such thing... now my phone is network unlocked i have installed XtreStoLite-ROM-3.3.1-DPDP no probs till now... but i wanna go back to tmobile firmware but i fear that i will have to get it unlocked again... however before i flashed this DPL1 my phone was unlocked on tmobile firmware.... So kinda plz tell if i flash MY EPF1 Firmware,,, will i face any unlocking issue
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If it was unlocked before on t-mobile you should be good. most you would need to do is run the t-mobile unlock app. just make sure you have a twrp backup just in case you need to go back to the rom that is working.
Okay so I was on Verizon with my unlocked note 8 and I would use unlocked stock firmware and got volte it was great. I switched to att and did the same went through ims says csc not found. Fine I flashed the att unlocked and it gives me a att bootup and att apps but I get volte. What files would I need to have unlocked firmware and volte. On AT&T. Thank you all I have all the Odin files download
I have the opportunity to pick up an AT&T unlocked S20FE, and was wondering if it is fully compatible with T-Mobile specifically for 5G/LTE Band 71?
BladeRunner said:
I have the opportunity to pick up an AT&T unlocked S20FE, and was wondering if it is fully compatible with T-Mobile specifically for 5G/LTE Band 71?
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The answer is, but you must flash the unlocked U1 firmware first and that will work or you can flash the T-Mobile firmware after.
You can stay on the unlocked firmware or flash the T-Mobile afterwards, no real difference. The only thing the AT&T version (flashed or not) won't give you is unlimited roaming on US Cellular. You need an actual T-Mobile branded phone for that.
I just received my S21 Ultra AT&T version but I am using Cricket wireless yesterday. I purchased it from samsung.com with full payment. I know I should buy the unlocked version, but the 256GB one I want is out of stock, so I have to buy the AT&T version. I turned on the phone last night but I did not insert cricket sim card. I updated the system and all softwares. I found there are a lot of AT&T bloatwares, but I do not need them acturally. So I plan to flash it with the XAA firmware. Before I do it, I have following questions:
1. If I flash the AT&T version with XAA firmware, does it also mean I unlock this phone? It could be used under other carriers (T-mobile, verizon and soon)?
2. If the flash does not unlock the phone, how do I unlock it? Ask samsung or AT&T to unlock it?
Thank you so much. Any responses are appreciated.
Flashing XAA does NOT unlock the phone. It will give you a less bloated software experience. Note that you have to be on AT&T firmware to unlock the device, then you can flash XAA.
Guyinlaca said:
Flashing XAA does NOT unlock the phone. It will give you a less bloated software experience. Note that you have to be on AT&T firmware to unlock the device, then you can flash XAA.
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Thank you for your response. I'll let ATT unlock my phone first.
I bought an unclocked S20 FE and flashed with ATT FW hoping I'd get the ATT (bloatware) allowing me to tether and get Visual Voice Mail. I do not see any of the ATT Bloat ware when I flashed SM-G781U1_ATT_G781U1UEU5DUH1 from Samfw.com. Mine is SG-781U1 (unlocked).
Any pointers would be very much appreciated. Able to get ATT SIM (5g) to work with Wifi calling and Volte but no Hotspot. When I toggle this it reverts back saying my plan does not allow it. I verified that my plan allows it and works on iPhone.
Thanks
Thats because you flashed U1 unlocked firmware that is not carrier branded. You need to flash U firmware and it will provision to your At&t sim.
butchieboy said:
Thats because you flashed U1 unlocked firmware that is not carrier branded. You need to flash U firmware and it will provision to your At&t sim.
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Can you suggest which one in the U Firmware I should use. I tried TMB and USC and no dice. I am not able to get rid of the CSC - shows as ATT/ATT/XAA - unable to get Hotspot working. I dont get any bloat ware the ATT stuff. I dont mind it but trying to flash the "U" version did not help. Appreciate any pointers
If your device is the unlocked version it will show XAA. It doesn't matter which U firmware you flash, they are all the same. The firmware will provision to whatever sim you have in device