• Introducing XDA Computing: Discussion zones for Hardware, Software, and more!    Check it out!

General AUIE - Oct 2021 | GALAXY S21 Ultra 5G | Official Firmware (SM-G998B) | 27th Sep 2021

Search This thread
In this thread, you can discuss and share the Mega links of new firmwares (OFFICIAL STOCK) for the Galaxy S21 Ultra 5G!
NO CUSTOM ROM's and/or ROOT-talk

How to flash the firmware to your phone:

Odin.png


1. Extract (un-rar) the firmware file (i.e. to folder C:\Odin) ***
2. Download Odin v3.14.4
3. Extract the Odin ZIP file (i.e. to folder C:\Odin)
4. Open Odin
5. Power OFF your S21 Ultra 5G
6. Reboot Phone in Download Mode: Connect USB-cable to your computer. Hold down "Volume up" and "Volume down" at same time. While holding down, connect the USB-cable to your phone. Or use the command "adb reboot-bootloader".
7. Wait until you get a blue sign in Odin
8. Add the firmware files to their designated slots (AP in AP, BL in BL, CP in CP, HOME_CSC in CSC). USERDATA stays EMPTY!
10. Click the start button, sit back and wait few minutes for the device to automatically restart.

*** You can always find the LATEST firmware in message #2

I have taken over these threads and they are dedicated to the memory of Henk, you can read more about him here:
 
Last edited:
Latest firmware for the Galaxy S21 Ultra 5G

Screenshot_20210928-115142_Software update.jpg


This is the latest ROM for Multi-CSC OXM and can be used for ALL CSC's mentioned in Multi-CSC OXM!
This is an official Samsung ROM so KNOX will not be triggered!


What's new:
* September security patches (Samsung Android Security Updates)
* The security of your device has been improved.

Model SM-G998B
Model name Galaxy S21 Ultra 5G
Country Multi-CSC OXM
Version Android 11
Changelist 22520315
Build date Mon, 13 Sep 2021 12:37:52 +0000
Security Patch Level 2021-10-01
Multi-CSC OXM
PDA G998BXXU3AUIE
CSC G998BOXM3AUIE

Details for download with Frija:

frija s21.png


Unzip the archive and place the files in the designated slots in Odin 3.14.4

HOME_CSC_OXM -> data will stay intact
CSC_OXM -> device will reset to factory settings

update s21.png
 
Last edited:
Multi-CSC Descriptions

The European model of the S21 Ultra 5G (SM-G998B) will get a Multi-CSC designated as OXM and that is the main focus of this particular thread but others can and will be discussed.

CountryProduct CodeMulti-CSC
Afghanistan(AFG)OXM
Albania(AVF)OXM
Australia(XSA)OXM
Australia(OPS)OXM
Australia(TEL)OXM
Australia(VAU)OXM
Austria(DRE)OXM
Austria(MOB)OXM
Austria(MAX)OXM
Austria(ATO)OXM
Baltic(SEB)OXM
Bulgaria(BGL)OXM
Caucasus Countries(CAU)OXM
Chile(CHO)OXM
Croatia(CRO)OXM
Croatia(VIP)OXM
Czech Republic(XEZ)OXM
Czech Republic(O2C)OXM
Czech Republic(TMZ)OXM
Czech Republic(VDC)OXM
Egypt(EGY)OXM
France(XEF)OXM
France(BOG)OXM
France(FTM)OXM
France(SFR)OXM
Germany(DBT)OXM
Germany(DTM)OXM
Germany(VD2)OXM
Greece(EUR)OXM
Greece(COS)OXM
Greece(VGR)OXM
Hungary(XEH)OXM
Hungary(TMH)OXM
India(INU)OXM
Iraq(MID)OXM
Ireland(TSI)OXM
Ireland(MET)OXM
Ireland(3IE)OXM
Ireland(VDI)OXM
Israel(ILO)OXM
Italy(ITV)OXM
Italy(HUI)OXM
Italy(TIM)OXM
Italy(OMN)OXM
Kazakhstan(SKZ)OXM
Kenya(AFR)OXM
Kenya(DKR)OXM
Lebanon(ILP)OXM
Libya(BTC)OXM
Luxembourg(LUX)OXM
Macedonia(MBM)OXM
Malaysia(XME)OXM
Morocco(MWD)OXM
Nepal(NPL)OXM
Netherlands(PHN)OXM
Netherlands(TNL)OXM
Netherlands(VDF)OXM
Nigeria(ECT)OXM
Nordic countries(NEE)OXM
Pakistan(PAK)OXM
Panama(TPA)OXM
Philippines(GLB)OXM
Philippines(XTC)OXM
Poland(XEO)OXM
Poland(OPV)OXM
Poland(PLS)OXM
Poland(PRT)OXM
Poland(TPL)OXM
Portugal(MEO)OXM
Portugal(TPH)OXM
Portugal(TCL)OXM
Romania(ROM)OXM
Romania(COA)OXM
Romania(ORO)OXM
Romania(CNX)OXM
Russia(SER)OXM
Saudi Arabia(KSA)OXM
Saudi Arabia(ACR)OXM
Serbia(MSR)OXM
Serbia(TOP)OXM
Singapore(MM1)OXM
Singapore(XSP)OXM
Singapore(SIN)OXM
Singapore(STH)OXM
Slovakia(ORX)OXM
Slovakia(ORS)OXM
Slovakia(TMS)OXM
Slovenia(SIO)OXM
Slovenia(MOT)OXM
Slovenia(SIM)OXM
South Africa(XFE)OXM
South Africa(XFA)OXM
South Africa(XFV)OXM
South East Europe(SEE)OXM
Spain(PHE)OXM
Spain(XEC)OXM
Spain(AMO)OXM
Spain(ATL)OXM
Sri Lanka(SLK)OXM
Sweden(HTS)OXM
Switzerland(AUT)OXM
Switzerland(SWC)OXM
Thailand(THL)OXM
Thailand(MYM)OXM
Trinidad and Tobago(EON)OXM
Tunisia(TUN)OXM
Turkey(TUR)OXM
Ukraine(SEK)OXM
United Arab Emirates(LYS)OXM
United Arab Emirates(XSG)OXM
United Kingdom(BTU)OXM
United Kingdom(EVR)OXM
United Kingdom(H3G)OXM
United Kingdom(O2U)OXM
United Kingdom(VOD)OXM
Unknown(XNZ)OXM
Uzbekistan(CAC)OXM
Vietnam(XXV)OXM

These are the other Multi-CSC types available that may see new updates released at different times:

CountryProduct CodeMulti-CSC
Argentina(ANC)OWE
Chile(CHE)OWE
Costa Rica(ICE)OWE
Dominican Republic(DOR)OWE
Jamaica(CWW)OWE
Unknown(BAT)OWE

CountryProduct CodeMulti-CSC
Argentina(ARO)OWO
Argentina(CTI)OWO
Argentina(UFN)OWO
Argentina(PSN)OWO
Bolivia(BVO)OWO
Brazil(ZTO)OWO
Brazil(ZTA)OWO
Brazil(ZTM)OWO
Brazil(ZVV)OWO
Chile(CRC)OWO
Chile(CHL)OWO
Chile(CHT)OWO
Colombia(COL)OWO
Colombia(COO)OWO
Colombia(COM)OWO
Colombia(COB)OWO
Dominican Republic(CDR)OWO
Ecuador(EBE)OWO
Ecuador(ECO)OWO
Guatemala(PGU)OWO
Guatemala(CGU)OWO
Mexico(IUS)OWO
Mexico(TMM)OWO
Mexico(TCE)OWO
Panama(CPA)OWO
Paraguay(UPO)OWO
Paraguay(PSP)OWO
Paraguay(TGP)OWO
Peru(PET)OWO
Peru(PEO)OWO
Peru(PNT)OWO
Peru(SAM)OWO
South America(NBS)OWO
Unknown(BVT)OWO
Unknown(MXO)OWO
Uruguay(UFU)OWO
Uruguay(CTU)OWO

Lastly, phones with these product codes do not currently share CSC with different countries:

CountryProduct CodeCSC
Indonesia(XID)OLE
 
Last edited:

hccssn

Senior Member
Nov 25, 2010
178
33
Hello,

is it please possible to change the CSC from ORS (SK provider Orange) to ORX (standard for SK)?

On S10+ it was possible just with flashing multi CSC ROM via Odin and a factory reset. Is it the same on S21 Ultra, please?

Thanks.
 

henklbr

Senior Member
Feb 20, 2009
6,126
6,738
Netherlands
www.sammobile.com
Hello,

is it please possible to change the CSC from ORS (SK provider Orange) to ORX (standard for SK)?

On S10+ it was possible just with flashing multi CSC ROM via Odin and a factory reset. Is it the same on S21 Ultra, please?

Thanks.

Both CSC's, ORS & ORX, are part of Multi-CSC OXM. If your CSC is ORS now, you can't change it to ORX (it's automatically set)
 
  • Like
Reactions: carlitobahsoun

hccssn

Senior Member
Nov 25, 2010
178
33
Both CSC's, ORS & ORX, are part of Multi-CSC OXM. If your CSC is ORS now, you can't change it to ORX (it's automatically set)

Well, I have ORS/ORS and ORS/EUX/ORS on my S21 Ultra.

I had ORS/ORS and ORS/ORS on my S10+ and I simply flashed a multi CSC rom via Odin and did a factory reset. The CSC got changed to ORX/ORX and ORX/ORS.

My problem with S10+ was that the simple ORS CSC has delayed updates by multiple months and they do not release every update from Samsung. The ORS is a customised anrdoid by Orange SK tele-provider.

After I changed the S10+ to ORX, I got finally the updates as the non-provider-purchased users.
 

henklbr

Senior Member
Feb 20, 2009
6,126
6,738
Netherlands
www.sammobile.com
Well, I have ORS/ORS and ORS/EUX/ORS on my S21 Ultra.

I had ORS/ORS and ORS/ORS on my S10+ and I simply flashed a multi CSC rom via Odin and did a factory reset. The CSC got changed to ORX/ORX and ORX/ORS.

My problem with S10+ was that the simple ORS CSC has delayed updates by multiple months and they do not release every update from Samsung. The ORS is a customised anrdoid by Orange SK tele-provider.

After I changed the S10+ to ORX, I got finally the updates as the non-provider-purchased users.

That were the "good old days"... ;)

Somehow Samsung changed this, and it's not possible anymore.
 

henklbr

Senior Member
Feb 20, 2009
6,126
6,738
Netherlands
www.sammobile.com
G998BXXU1AUB3 (Multi-CSC OXM)

Screenshot_20210205-131509_Settings.jpg


This ROM is the latest ROM for Multi-CSC OXM released 05 Feb 21, and can be used for ALL CSC's mentioned in Multi-CSC OXM!
This is official Samsung ROM, so KNOX won't be triggered!


What's new:
* February security patches (Samsung Android Security Updates)
* The performance of Camera has been improved
* Overall stability of functions improved
* The security of your device has been improved

Model SM-G998B
Model name Galaxy S21 Ultra 5G
Country Multi-CSC OXM
Version Android 11
Changelist 20701476
Build date Wed, 3 Feb 2021 21:24:27 +0000
Security Patch Level 2021-02-01
Multi-CSC OXM
PDA G998BXXU1AUB3
CSC G998BOXM1AUB3
Details for download with Frija:
Naamloos.png


UN-ZIP the archive and place the files in the designated slots in Odin 3.14.4

HOME_CSC_OXM -> data will stay intact
CSC_OXM -> device will reset
 
Last edited:

Top Liked Posts