G990W2VLSKIZB2 – Galaxy S21 FE 5G firmware

Build G990W2VLSKIZB2 is a security update for the Galaxy S21 FE 5G (SM-G990W2) on Android 16 (One UI 8). It first appeared on Samsung's servers on Mar 19, 2026 (method) and has reached 11 regions so far. It raises the bootloader bit from 19 to 20: once installed, the device no longer accepts firmware with bit 19 or lower, so a downgrade to G990W2VLSJIZA1 is blocked. Samsung still serves this file.

Model
SM-G990W2
Android
Android 16
Type
Security
Bootloader bit
20
First released
Mar 19, 2026
Regions
11

Rollout timeline by region

The date each region code (CSC) first received G990W2VLSKIZB2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BMCCanada (Bell)Mar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
BWACanadaMar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
ESKCanada (Eastlink)Mar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
FMCCanada (Fido)Mar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
GLWCanada (Freedom)Mar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
KDOCanada (Koodo)Mar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
RWCCanada (Rogers)Mar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
TLSCanada (Telus)Mar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
VMCCanada (Virgin)Mar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
VTRCanada (Videotron)Mar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2
XACCanadaMar 19, 2026day 0G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2

Download and release notes

samloader download -m SM-G990W2 -r BMC -v G990W2VLSKIZB2/G990W2OYVKIZB2/G990W2VLSKIZB2

Samsung's release notes and security patch level for this update: SM-G990W2 / BMC on doc.samsungmobile.com. What each part of the build number means: decode G990W2VLSKIZB2.