Download the Samsung firmware for the Galaxy S21 SM-G991U with product code CCT from Comcast. This firmware has version number PDA G991USQU2AUB5 and CSC G991UOYN2AUB5. The operating system of this firmware is Android 11 , with build date Tue, 23 Feb 2021 09:15:14 +0000. Security patch date is 2021-03-01, with changelist 20700993.
Model | SM-G991U |
Model name | Galaxy S21 |
Country | |
Version | Android 11 |
Changelist | 20700993 |
Build date | Tue, 23 Feb 2021 09:15:14 +0000 |
Security Patch Level | 2021-03-01 |
Product code | CCT |
PDA | G991USQU2AUB5 |
CSC | G991UOYN2AUB5 |
AP (System &Recovery)
BL (Bootloader)
CP (Modem / Radio)
CSC_*** (Country / Region / Operator)
HOME_CSC_*** (Country / Region / Operator)
Other options in case first option did not work or isn't possible.
Option 2 VOLUME DOWN + VOLUME UP then USB cable
Option 3 POWER + VOLUME DOWN + VOLUME UP
Option 4 POWER + VOLUME DOWN + HOME BUTTON
Option 5 (Note9) USB cable + VOLUME DOWN + BIXBY
Option 6 (Note10) POWER + VOLUME UP
AP (System &Recovery)
Other options in case first option did not work or isn't possible.
Option 2 VOLUME DOWN + VOLUME UP then USB cable
Option 3 POWER + VOLUME DOWN + VOLUME UP
Option 4 POWER + VOLUME DOWN + HOME BUTTON
Option 5 (Note9) USB cable + VOLUME DOWN + BIXBY
Option 6 (Note10) POWER + VOLUME UP
For most devices, the model number (e.g. "GT-I9505" or "SM-G900F") is found inside the device. It becomes visible when you open your device and remove the battery.
As an alternative, you can also type your model name (e.g. "GALAXY S5") instead of the number. But it may be a bit more difficult to find your specific device that way.
Still not sure? Then perhaps Samsung can help you out with their model number lookup tool.