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Galaxy s21 not receiving updates

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revence1988

Member
Oct 7, 2012
21
7
Doorn
HTC One S
Google Nexus 4
I have a Galaxy s21 olympic edition with number SM-G991Q and i am not receiving montly updates. The last update was the August 2021 patch and was installed on August 30th.
Also smart switch on Windows is not detecting Any new updates.
I tried to reset the device without luck getting new updates.

Does anybody has the same problems with the Galaxy s21 SM-G991Q not receiving updates?
 

jussy

Senior Member
May 10, 2010
51
2
Mantova
I have the same phone and find it odd that it doesn't show up on sammobile or anywhere else.
Does anyone know where to find original firmwares for it?
 
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DirgiEx

Member
Aug 22, 2011
9
4
Oščadnica
I have too G991Q and I need flash to XAA because I need BAND 20 LTE my country help me pls or altwrnative stock ROM?
 

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DirgiEx

Member
Aug 22, 2011
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gatekeeper11

New member
Jul 16, 2010
1
0
I have a question about the G991Q, did any of you get the ESIM to work yet? It is currently software locked - in theory it should have it because it is a Snapdragon chip
 

Corbik

Member
Nov 26, 2021
11
2
Do you have Android 12 on G991Q already? Im checking every day but still no luck Should I install non olympic rom? Will that work? Thanks
 

SkandaH

XDA Portal Supporter
Jun 8, 2013
987
2,593
@Corbik

This particular variant has yet to receive the stable One UI 4/Android 12 update.

@jussy

See here; the model number of this variant is SM-G991Q and the CSC is SJP. At the time of posting this, the latest available firmware version is G991QOPU1AUJ2.
 

Corbik

Member
Nov 26, 2021
11
2
What standard version would be closest to G991Q? I tried to flash U1 ROM but no luck
 

jominguta

Member
Aug 3, 2021
9
0
Brasil
Friends i'm also with the SM-G991Q olympic version.. I really need to switch to CSC from ZTO, to try to use VOLTE and WIFI CALLING from my operator in my country, Brazil!

Can someone please help me change CSC to ZTO ? I tried the tutorial above, but it doesn't open anything when typing the codes, were you able to change? I saw that it only works on android 10. but we are on android 11.

I saw that you have the option to change CSC ANDROID 11 via Samkey, but I believe it still doesn't have support for our SM-G991Q device.

@TZS03 @DirgiEx @SkandaH
 

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Corbik

Member
Nov 26, 2021
11
2
Have you tried switching to another S21 variant's ROM with Snapdragon 888? it worked out ?

If it doesn't work, I think I found our ROM to perform restoration via ODIN, in brink event:

Yes I tried the U1 version since it should be US version with Snapdragon888.
That ROM you found, based on the numbers is exactly what is in my phone now.
I think I will just wait some more time to get official Android 12 update, hopefully our special version wont be forgotten :)

But If somebody know which ROM would also work for SM-G991Q and ideally would also support all languages and features (esim for example) please share
 

jominguta

Member
Aug 3, 2021
9
0
Brasil
Yes I tried the U1 version since it should be US version with Snapdragon888.
That ROM you found, based on the numbers is exactly what is in my phone now.
I think I will just wait some more time to get official Android 12 update, hopefully our special version wont be forgotten :)

But If somebody know which ROM would also work for SM-G991Q and ideally would also support all languages and features (esim for example) please share
True, I hope we don't forget... friend know how I can change CSC to ZTO ?
 

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