Is G9910ZCSGHZB1/G9910CHCGHZB1/G9910ZCSGHZB1 stable for daily use?

This is an official firmware release. All official releases from FirmwareMirror are stable and tested. Always backup your data before flashing any firmware.

Is this firmware the latest version?

Yes, G9910ZCSGHZB1/G9910CHCGHZB1/G9910ZCSGHZB1 is the version shown. Check FirmwareMirror regularly for newer versions of Samsung Galaxy S21 (SM-G9910) firmware.

Download Samsung Galaxy S21 (SM-G9910) ROM - G9910ZCSGHZB1/G9910CHCGHZB1/G9910ZCSGHZB1 (CHC)

Q: How to Flash Odin on Samsung Galaxy S21 (SM-G9910)

1. Download the G9910ZCSGHZB1/G9910CHCGHZB1/G9910ZCSGHZB1 Recovery ROM (.zip file). 2. Transfer the file to the internal storage root directory of your Samsung Galaxy S21 (SM-G9910). 3. Navigate to Settings > About Phone > System Update. 4. Tap the OS logo 10 times to enable advanced features.

What's New

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Android Version

N/A

File Size

1.22 GB

Release Date

Feb 01, 2026

Flash Method

Odin

Download ROM

Available

Download Now

File Size: 1.22 GB

Mirror Downloads (1)

Mirror 1

1 mirror(s) available • Click any button to download

Verification & Details

Package Name:

G9910ZCSGHZB1

How to Flash Odin on Samsung Galaxy S21 (SM-G9910)

Please follow these steps carefully to install the G9910ZCSGHZB1/G9910CHCGHZB1/G9910ZCSGHZB1 update safely. Ensure your device has at least 60% battery.

Download the G9910ZCSGHZB1/G9910CHCGHZB1/G9910ZCSGHZB1 Recovery ROM (.zip file).
Transfer the file to the internal storage root directory of your Samsung Galaxy S21 (SM-G9910).
Navigate to Settings > About Phone > System Update.
Tap the OS logo 10 times to enable advanced features.
Tap the top-right menu icon and select 'Choose update package'.
Select the downloaded zip file and wait for the automated installation to complete.

Back to Samsung Galaxy S21 (SM-G9910)

Download Samsung Galaxy S21 (SM-G9910) Firmware (G9910ZCSGHZB1/G9910CHCGHZB1/G9910ZCSGHZB1)