G990W2VLSIIYK2 – Galaxy S21 FE 5G firmware

Build G990W2VLSIIYK2 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 Dec 11, 2025 (method) and has reached 11 regions so far. It raises the bootloader bit from 17 to 18: once installed, the device no longer accepts firmware with bit 17 or lower, so a downgrade to G990W2VLUHIYJ1 is blocked. Samsung still serves this file.

Model
SM-G990W2
Android
Android 16
Type
Security
Bootloader bit
18
First released
Dec 11, 2025
Regions
11

Rollout timeline by region

The date each region code (CSC) first received G990W2VLSIIYK2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BMCCanada (Bell)Dec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
BWACanadaDec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
ESKCanada (Eastlink)Dec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
FMCCanada (Fido)Dec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
GLWCanada (Freedom)Dec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
KDOCanada (Koodo)Dec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
RWCCanada (Rogers)Dec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
TLSCanada (Telus)Dec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
VMCCanada (Virgin)Dec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
VTRCanada (Videotron)Dec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2
XACCanadaDec 11, 2025day 0G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2

Download and release notes

samloader download -m SM-G990W2 -r BMC -v G990W2VLSIIYK2/G990W2OYVIIYK2/G990W2VLSIIYK2

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 G990W2VLSIIYK2.