Downgrade current binary of my SM-G920T - T-Mobile Samsung Galaxy S6

II have a Samsung Galaxy S6 with carrier T-Mobile (SM-G920T) that was flashed with stock ROM G920TUVS6FRC1with android 7.0 but the security does not work, I tried to flash it with G920TUVU1AOCG_G920TTMB1AOCG_TMB with Android 5.0.2 through Odin but I have sw check fail device: 6 current: 1. So I used ASSAYYED_KITCHEN_V1.82_STABLE and create a zip with system.img and boot.img of the second ROM and flashed it with TWRP. Everything seemed to go well, the only thing that left was carrier unlock that I did it with Octopus Box but when I insert my sim the mobile go into upload mode. I need to flash it with 920TUVU1AOCG_G920TTMB1AOCG_TMB or, if exist, with any other ROM with Android 5.0.2 but for that seems that I need bypass bootloader check. Any suggestion?

Related

Galaxy S5 Active AT&T (SM-G870A) Software Update Help?!

Hello guys;
First of all, Let me post my phone software info:
Android Version: 4.4.2
Build Number: KOT49H.G870AUCU1ANG3
Phone Location: out USA
I tried all methods available to update my phone at least lollipop not even Marshmallow! and every time i get the message "The is the latest software update available to your phone"!
I tried the software update inside settings, Kies 3 (also emergency recovery method), Smart Switch, AT&T SIM Card inserted with USA VPN...etc)...non of them worked for me!
Does any one manage to have a legit Lollipop or Marshmallow Odin Stock Flash?!
I saw some methods over recovery with OTA update packages but it is too risky since there is no Stock ROM for the device in Sammobile also i am afraid to brick the device or losing IMEI and no service Box is supporting it!
looking for your help!?
milanguy said:
Hello guys;
First of all, Let me post my phone software info:
Android Version: 4.4.2
Build Number: KOT49H.G870AUCU1ANG3
Phone Location: out USA
I tried all methods available to update my phone at least lollipop not even Marshmallow! and every time i get the message "The is the latest software update available to your phone"!
I tried the software update inside settings, Kies 3 (also emergency recovery method), Smart Switch, AT&T SIM Card inserted with USA VPN...etc)...non of them worked for me!
Does any one manage to have a legit Lollipop or Marshmallow Odin Stock Flash?!
I saw some methods over recovery with OTA update packages but it is too risky since there is no Stock ROM for the device in Sammobile also i am afraid to brick the device or losing IMEI and no service Box is supporting it!
looking for your help!?
Click to expand...
Click to collapse
Thats becuz there isnt for att yet. Therr are over the airs for 5.0 but nothing else. And the update to 5.1 but its stock and unrooted you have to be rooted im sure for that and using flashfire for it so it just changes rom and not bootloader . Allowing you to still downgrade back.
Sent from my SM-G900F using XDA-Developers mobile app

SM-G900A or SM-G900F Odin write fail

Hello
I just buy a brand new galaxy S5 from an international seller en PriceMinister one month ago . The phone is stuck on Samsung logo at start so i just wanted to reflash a stock firmware using Odin.
J just need advices in order to know what firmware or files i should use for this phone . the sticker on the phone says it's a SM-G900F but for download mode or recovery mode it's a G900A ( see attachments )
Infos on sticker SM-G900F SSN: -G900FGSMH imei : 35........
Infos on download mode :
ODIN MODE
PRODUCT NAME : SM-G900A
SYSTEM STATUIS : Official
REACTIVATION LOCK(KK): OFF
KNOX WARRANTY VOID : 0x0
QUALCOMM SECUREBOOT: ENABLE
AP SWAEV: S1,T2,A1,A4,P1
SECURE DOWNLOAD : ENABLE
UDC START
Infos on recovery mode :
Android system recovery <3e>
LRX21T.G900AUCU4BOF2
Thanks for your help
Well first off, according to the firmware, it seems you have the AT&T version. The label on the phone is wrong, in fact, that label looks fake. The font is wrong.
Anyway, I am assuming you want to stick with the AT&T firmware for this. Use the stock build, it's the easiest to root.
Helgen said:
Well first off, according to the firmware, it seems you have the AT&T version. The label on the phone is wrong, in fact, that label looks fake. The font is wrong.
Anyway, I am assuming you want to stick with the AT&T firmware for this. Use the stock build, it's the easiest to root.
Click to expand...
Click to collapse
You mean this topic ? http://forum.xda-developers.com/showthread.php?t=2714455
there are a lot of different firmwares , can you point me at the right file please ?
jdut said:
You mean this topic ? http://forum.xda-developers.com/showthread.php?t=2714455
there are a lot of different firmwares , can you point me at the right file please ?
Click to expand...
Click to collapse
Yup, that's the exact same one I used as well. Make sure you read on how to install it, too.
Nope Nopity Nope
Helgen said:
Yup, that's the exact same one I used as well. Make sure you read on how to install it, too.
Click to expand...
Click to collapse
Warning: That will BRICK your device!!!
You're running OF2, on the G900A that version contains an updated bootloader and blows a qfuse. You can't ODIN back to NCE from that build. You're stuck on OF2.
Unfortunately, there is no ODIN file for you to restore the OF2 installation, so you have to ODIN to OI5 (http://forum.xda-developers.com/showpost.php?p=53454972&postcount=1 first link)
AptLogic said:
Warning: That will BRICK your device!!!
You're running OF2, on the G900A that version contains an updated bootloader and blows a qfuse. You can't ODIN back to NCE from that build. You're stuck on OF2.
Unfortunately, there is no ODIN file for you to restore the OF2 installation, so you have to ODIN to OI5 (http://forum.xda-developers.com/showpost.php?p=53454972&postcount=1 first link)
Click to expand...
Click to collapse
you were absolutely right .... my device is now semi bricked , i was just able to flash the CSC file ( BL or AP refused to flash )
Now here is the situation
1) i still have access to recovery mode
Informations on screen changed
it's now KOT49H.G900AUCU1ANCE
2) i still have access to download mode
3) going to reflash OI5 via Odin
reflash done
Congratulations for your advice . Samsung S5 is now working . a big thanks from my 13 years old boy , you saved his birthday !
hey all.
i need some serious help here.
i have the same problem.
it's a little different from yours.
i've just bought a samsung S5 G900f as the phone info says and the sticker under the battery as well.
my phone is running kitkat 4.4.2
and can't get any update via software update.
for the record, the phone shows the AT&T software update which means i need an AT&T SIM card to get an update.
i'm frm morocco and if its An AT&T version of s5 , that means it was unlocked.
when i go to bootloader it says G900A....
as well as the download mode says it's a G900A
i took my EMEI and put it in emei.info website they said it is a G900f.
i installed an app from play store called phone info.
it says that my phone has A G900A bootloader , A G900A baseband version , an AT&T finger print build , and an AT&T original CsC code and an AT&T firmware's CsC code and states that the Csc country is Usa and the hardware revision is G900A.00
but on the other hand it says that my build number is G900FZHU1AND1.
please, anyone here can help me out with this.
what phone model do i have ?
what firmware should i flash via odin ? the G900f or G900A one?
will flashing An AT&T firmware lock my device network again if it was obviosly unlocked?
Please guys i need help.
anyone can help me out [emoji20]
Sent from my SM-G900F using Tapatalk
ZaKaRia OuH said:
hey all.
i need some serious help here.
i have the same problem.
it's a little different from yours.
i've just bought a samsung S5 G900f as the phone info says and the sticker under the battery as well.
my phone is running kitkat 4.4.2
and can't get any update via software update.
for the record, the phone shows the AT&T software update which means i need an AT&T SIM card to get an update.
i'm frm morocco and if its An AT&T version of s5 , that means it was unlocked.
when i go to bootloader it says G900A....
as well as the download mode says it's a G900A
i took my EMEI and put it in emei.info website they said it is a G900f.
i installed an app from play store called phone info.
it says that my phone has A G900A bootloader , A G900A baseband version , an AT&T finger print build , and an AT&T original CsC code and an AT&T firmware's CsC code and states that the Csc country is Usa and the hardware revision is G900A.00
but on the other hand it says that my build number is G900FZHU1AND1.
please, anyone here can help me out with this.
what phone model do i have ?
what firmware should i flash via odin ? the G900f or G900A one?
will flashing An AT&T firmware lock my device network again if it was obviosly unlocked?
Click to expand...
Click to collapse
Flash a G900F firmware and if it bricks come back here for unbrick instructions. Sounds to me like your seller flashed a G900A firmware on a G900F.
Network locks are carrier-side, not device-side. No matter what you flash, if the device was unlocked it will remain unlocked.
AptLogic said:
Flash a G900F firmware and if it bricks come back here for unbrick instructions. Sounds to me like your seller flashed a G900A firmware on a G900F.
Network locks are carrier-side, not device-side. No matter what you flash, if the device was unlocked it will remain unlocked.
Click to expand...
Click to collapse
ok buddy.
thank you i'm gonna try and flash A G900f firmware , and let you know then.
despite the fact that i have a G900A bootloader which is locked and means it won't let me flash anything else but G900A firmwares.
for the record , when i access download mode it says it's a G900A.
Sent from my SM-G900F using Tapatalk

The latest bootloader and modem for android 7.0

Hello
Please help, I'm looking in the topic of the latest bootloader and modem for android 7.0 and so it can be installed via ODIN ..
I found something myself but it does not work and I do not know if it is the latest one, please help.
N920C
What variant do you have? I have the N920i. If I knew how to grab the latest bootloader/modem I'd totally do it for you.
I don't think the bootloader's changed since MM!?
Either way, download a rom from Samdroid. But be warned, to get root - you may need to unlock the bootloader in settings and flash twrp.
I need a file to install in ODIN

"secure check fail = bootloader" when flashing metropcs firmware on sprint galaxy s6

"secure check fail = bootloader" when flashing metropcs firmware on sprint galaxy s6
I have a Galaxy S6 that was on Sprint. I had Spring unlock it. I am trying to get it flashed to work on T-Mobile or MetroPCS.
I have downloaded Odin 3.12.5 and the latest factory Android 7.0 firmware for T-Mobile G920T and the variable for MetroPCS G920T1 .
I load Odin and click AP and load the firmware. I put my phone in download mode. It shows FRP off and Secure download enabled. I then hit start in Odin. Checksum passes but Odin fails after seconds. When I look at the phone's screen it shows the error "secure check fail = bootloader" .
I have read and read and watched videos, but cannot get past this error unless I flash a Sprint firmware to the phone.
What is weird is I had no problem whatsoever doing the same T-Mobile firmware flash to my Sprint Galaxy S7.
I prefer to flash it with T-Mobile's G920T1 version. But at this point I just want to get it flashed to be used on the T-Mobile network.
Is there a way to fix this error or can I flash the firmware in recovery on the S6? I read something about it but wanted some more confirmation.
Thanks in Advance
Tom

Note 5 (SM-N920C) Downgrade 7.0 to 6.0.1 Fail

I have samsung note 5 with android 7.0 stock rom, but I want to downgrade to 6.0.1, downloaded the rom from sammobile, i open OEM UNLOCKING and enable usb debugging, when i start on odin it says failed, tried few times but still same. Is it another way to downgrade,? am i doing a mistake i dont know. waiting your help
Downgrade is not allowed after some newer builds of Nougat.
sympathic3146 said:
I have samsung note 5 with android 7.0 stock rom, but I want to downgrade to 6.0.1, downloaded the rom from sammobile, i open OEM UNLOCKING and enable usb debugging, when i start on odin it says failed, tried few times but still same. Is it another way to downgrade,? am i doing a mistake i dont know. waiting your help
Click to expand...
Click to collapse
you cannot flash stock marshmallow occe you upgraded to nougat bootloader. But i want to know about roms, Can i flash marshmallow roms once im on the latest version of nougat? will i lose efs etc?
Sent from my Note 5 using XDA Labs
Use mm custom roms u can't just install stock firmware using odin

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