Looking to install the stock ROM on your Samsung Galaxy S21 5G SM-G991B? This comprehensive guide provides direct download links for the firmware flash file and clear, step-by-step instructions to get your phone back on track.
Use this firmware file to effectively reset your phone, fix bootloop issues, bypass password locks, resolve device freezing, and address numerous other software problems.
Downloads:
| CSC | Version | Android Version | Download Links |
|---|---|---|---|
| INU | G991BXXSFHYE1 | 15 | Download India (SamFW) |
| KSA | G991BXXSFHYE1 | 15 | Download Saudi Arabia (SamFW) |
| MID | G991BXXSFHYE1 | 15 | Download Iran (SamFW) |
| NPL | G991BXXSFHYE1 | 15 | Download Nepal (SamFW) |
| PAK | G991BXXSFHYE1 | 15 | Download Pakistan (SamFW) |
| SER | G991BXXSFHYE1 | 15 | Download Russia (SamFW) |
| SLK | G991BXXSFHYE1 | 15 | Download Sri Lanka (SamFW) |
| THL | G991BXXSFHYE1 | 15 | Download Thailand (SamFW) |
| TUR | G991BXXSFHYE1 | 15 | Download Turkey (SamFW) |
| XID | G991BXXSFHYE1 | 15 | Download Indonesia (SamFW) |
| XME | G991BXXSFHYE1 | 15 | Download Malaysia (SamFW) |
| XSG | G991BXXSFHYE1 | 15 | Download United Arab Emirates (SamFW) |
| XSP | G991BXXSFHYE1 | 15 | Download Singapore (SamFW) |
| XTC | G991BXXSFHYE1 | 15 | Download Philippines (SamFW) |
| XXV | G991BXXSFHYE1 | 15 | Download Vietnam (SamFW) |
| BTU | G991BXXSFHYE1 | 15 | Download United Kingdom (SamFW) |
| DBT | G991BXXSFHYE1 | 15 | Download Germany (SamFW) |
| XEF | G991BXXSFHYE1 | 15 | Download France (SamFW) |
| MXO | G991BXXSFHYE1 | 15 | Download Mexico (SamFW) |
| TPA | G991BXXSFHYE1 | 15 | Download Panama (SamFW) |
| ARO | G991BXXSFHYE1 | 15 | Download Argentina (SamFW) |
| CHL | G991BXXSFHYE1 | 15 | Download Chile (SamFW) |
| COO | G991BXXSFHYE1 | 15 | Download Colombia (SamFW) |
| ZTO | G991BXXSFHYE1 | 15 | Download Brazil (SamFW) |
| AFR | G991BXXSFHYE1 | 15 | Download Kenya (SamFW) |
| ECT | G991BXXSFHYE1 | 15 | Download Nigeria (SamFW) |
| EGY | G991BXXSFHYE1 | 15 | Download Egypt (SamFW) |
| XFA | G991BXXSFHYE1 | 15 | Download South Africa (SamFW) |
| XNZ | G991BXXSFHYE1 | 15 | Download New Zealand (SamFW) |
| XSA | G991BXXSFHYE1 | 15 | Download Australia (SamFW) |
How to Flash the Samsung Galaxy S21 5G SM-G991B Firmware [Stock ROM]
Okay, you finally got the correct Samsung Galaxy S21 5G SM-G991B firmware. Now what? Time to flash it (no, not that kind of flash). Whether your phone’s stuck in a boot loop, totally bricked, or wanna flex with an upgrade/downgrade, flashing is your BFF.
Good news: Samsung made this low-key easy. The steps are the same for most of their phones, so once you’ve done it once, you’re golden.
This guide’s got your back—tools you’ll need, pre-game prep, and the complete step-by-step. Follow along, don’t skip anything, and you’ll return to doomscrolling TikTok in no time. Let’s go!
