Question [S901W] Flashed incorrect ROM via Odin | stuck in download mode

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bikerabhinav

Senior Member
Got a new S901W S22 (Canada TELUS). I was trying to flash non-carrier generic OEM ROM via Odin v3.14.1_3B Patched. I made a mistake and flashed S901U1 XAA instead of S901W XAC. The XAA version has bootloader version 2, while XAC still has 1. Now I cannot flash the correct ROM because we cannot downgrade the bootloader. So I am stuck in Download mode:
photo_2022-05-15_16-09-54.jpg


When I try t flash the correct XAC version it says:
sw rev check fail fused 2 binary 1

Few questions:

  1. Is there ANY way I can downgrade the bootloader and flash the XAC ROM now? Or do I need to wait for XAC with v2 bootloader to release, which is going to be a few weeks I assume, given that it was released in US on May 5, 2022 and few other countries on May 8.
  2. In case I want to wait for XAC with v2 bootloader, how do I turn off the device? There's only a reboot option no shut down.
  3. Can the phone be charged in Download mode? I started with 100% battery, but ofcourse now it does not show battery % and I am unable to shut down the phone - worried if I'll drain the battery
Summary:
Phone: S22 S901W TELUS
Flashed ROM (Attempt#1): Samfw.com_SM-S901U1_XAA_S901U1UEU2AVDC_fac
Flashed ROM (Attempt#2): Samfw.com_SM-S901W_XAC_S901WVLU1AVCJ_fac

UPDATE 1: Looks like the phone switched off on it's own after about 30mins of no activity when unplugged. Now waiting for XAC bootloader v2 ROM
 
Last edited:

bikerabhinav

Senior Member
Your only solution is to wait until S901W has bit 2 ROM. You cannot downgrade bootloader version.
Yeah, I believe that's my only option. what about battery though? does it charge in download mode? or any way I can turn it off?

UPDATE 1: Looks like the phone switched off on it's own after about 30mins of no activity when unplugged. Now waiting for XAC bootloader v2 ROM
 
Last edited:

nguyenlucky

Senior Member
Jan 30, 2013
173
70
danang
Yeah, I believe that's my only option. what about battery though? does it charge in download mode? or any way I can turn it off?

UPDATE 1: Looks like the phone switched off on it's own after about 30mins of no activity when unplugged. Now waiting for XAC bootloader v2 ROM
Beware, as in some rare cases, Samsung does not increase the bit at all.

For example, my S20 Korean version (G981N) is still on bit 1 despite having 2 Android updates.
 

bikerabhinav

Senior Member
Beware, as in some rare cases, Samsung does not increase the bit at all.
Damn, that's scary. I checked data for S20 and looks like US version (XAS) got bit 2 on Apr 29, 2021 and Canada (XAC) got it on Apr 30, 2021. That gives me hope but fingers crossed!

Not sure why they left Korea out but maybe because Exynos CPU has different releases?

Don't want to haggle with carrier and ask for replacement just yet. I'll wait for a week or two
 

nguyenlucky

Senior Member
Jan 30, 2013
173
70
danang
Damn, that's scary. I checked data for S20 and looks like US version (XAS) got bit 2 on Apr 29, 2021 and Canada (XAC) got it on Apr 30, 2021. That gives me hope but fingers crossed!

Not sure why they left Korea out but maybe because Exynos CPU has different releases?

Don't want to haggle with carrier and ask for replacement just yet. I'll wait for a week or two
S20 and Note 20 series in Korea have S865 though, and both are still on bit 1 with latest firmware
Not sure what Samsung is thinking 😂
 

gav83collins

Senior Member
Got a new S901W S22 (Canada TELUS). I was trying to flash non-carrier generic OEM ROM via Odin v3.14.1_3B Patched. I made a mistake and flashed S901U1 XAA instead of S901W XAC. The XAA version has bootloader version 2, while XAC still has 1. Now I cannot flash the correct ROM because we cannot downgrade the bootloader. So I am stuck in Download mode:
View attachment 5615335

When I try t flash the correct XAC version it says:


Few questions:

  1. Is there ANY way I can downgrade the bootloader and flash the XAC ROM now? Or do I need to wait for XAC with v2 bootloader to release, which is going to be a few weeks I assume, given that it was released in US on May 5, 2022 and few other countries on May 8.
  2. In case I want to wait for XAC with v2 bootloader, how do I turn off the device? There's only a reboot option no shut down.
  3. Can the phone be charged in Download mode? I started with 100% battery, but ofcourse now it does not show battery % and I am unable to shut down the phone - worried if I'll drain the battery
Summary:
Phone: S22 S901W TELUS
Flashed ROM (Attempt#1): Samfw.com_SM-S901U1_XAA_S901U1UEU2AVDC_fac
Flashed ROM (Attempt#2): Samfw.com_SM-S901W_XAC_S901WVLU1AVCJ_fac

UPDATE 1: Looks like the phone switched off on it's own after about 30mins of no activity when unplugged. Now waiting for XAC bootloader v2 ROM
happened to me earlier, just reflash the right firmware using odin, hold all 3 buttons until it boots to the "installation failed" screen and reflash

edit, mis read the post...... i on the s22 and my flash failed, stuck on download installation failed screen, no key combination would take me out of it, i just unplugged, replugged,, reset odin, and flashed again (s22u), and all was well
 

MegaJuif

Member
Nov 17, 2018
28
3
Sherbrooke
Got a new S901W S22 (Canada TELUS). I was trying to flash non-carrier generic OEM ROM via Odin v3.14.1_3B Patched. I made a mistake and flashed S901U1 XAA instead of S901W XAC. The XAA version has bootloader version 2, while XAC still has 1. Now I cannot flash the correct ROM because we cannot downgrade the bootloader. So I am stuck in Download mode:
View attachment 5615335

When I try t flash the correct XAC version it says:


Few questions:

  1. Is there ANY way I can downgrade the bootloader and flash the XAC ROM now? Or do I need to wait for XAC with v2 bootloader to release, which is going to be a few weeks I assume, given that it was released in US on May 5, 2022 and few other countries on May 8.
  2. In case I want to wait for XAC with v2 bootloader, how do I turn off the device? There's only a reboot option no shut down.
  3. Can the phone be charged in Download mode? I started with 100% battery, but ofcourse now it does not show battery % and I am unable to shut down the phone - worried if I'll drain the battery
Summary:
Phone: S22 S901W TELUS
Flashed ROM (Attempt#1): Samfw.com_SM-S901U1_XAA_S901U1UEU2AVDC_fac
Flashed ROM (Attempt#2): Samfw.com_SM-S901W_XAC_S901WVLU1AVCJ_fac

UPDATE 1: Looks like the phone switched off on it's own after about 30mins of no activity when unplugged. Now waiting for XAC bootloader v2 ROM
How did you manage to unlock the bootloader ?? My s22 is from virgin in canada and i can't unlock it.
 

bikerabhinav

Senior Member
New firmware just released for XAC with v2 bootloader. Downloading via samloader. Hopefully this fixes the phone!

S901WVLU2AVDC / S901WOYV2AVDC / S901WVLU2AVDC
Alright, we're back in business! Phone is working now.

However, I still see carrier crap installed and all my files intact (Im okay with full wipe). Is it because I used HOME_CSC instead of CSC? Should I just flash again using CSC this time?

Screenshot_20220517-001205_Settings.jpg
 
Last edited by a moderator:

gav83collins

Senior Member
New firmware just released for XAC with v2 bootloader. Downloading via samloader. Hopefully this fixes the phone!


Alright, we're back in business! Phone is working now.

However, I still see carrier crap installed and all my files intact (Im okay with full wipe). Is it because I used HOME_CSC instead of CSC? Should I just flash again using CSC this time?

View attachment 5616211
u would need to flash a non carrier (unlocked) csc but you would lose your settings, back up via smart switch to ext usb, google back up, and samsung back first
 

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    Your only solution is to wait until S901W has bit 2 ROM. You cannot downgrade bootloader version.