Firmware G991BXXU4BULF

Device Galaxy S21 5G

Model SM-G991B

Region BGL

Country Bulgaria

OS Android 12

Release Date 12/23/2021

Upload Date 1/17/2022

PDA G991BXXU4BULF

CSC G991BOXM4BULF

Changelist 23365054

Size 7686881680 bytes (approx. 7.2 GB)

BGL CSC Breakdown

Network ID

NW01657

Network Name

A1 BG

Network Country

Bulgaria

Network Bands

GSM 900 / UMTS 900 / UMTS 2100 / LTE 900 / LTE 1800 / LTE 2100 / 5G 3500

Network ID

NW01260

Network Name

Telenor BG

Network Country

Bulgaria

Network Bands

GSM 900 / UMTS 900 / UMTS 2100 / LTE 1800 / LTE 2100 / 5G 3500

Network ID

NW01448

Network Name

vivacom

Network Country

Bulgaria

Network Bands

GSM 900 / UMTS 900 / UMTS 2100 / LTE 900 / LTE 1800 / LTE 2100 / 5G 1800 / 5G 2100