X406BXXS8CZI2 – Galaxy Tab S10 Lite 5G firmware

Build X406BXXS8CZI2 is a security update for the Galaxy Tab S10 Lite 5G (SM-X406B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 20, 2026 (method) and has reached 42 regions so far. It raises the bootloader bit from 7 to 8: once installed, the device no longer accepts firmware with bit 7 or lower, so a downgrade to X406BXXS7CZH6 is blocked. Samsung still serves this file.

Model
SM-X406B
Android
Android 16
Type
Security
Bootloader bit
8
First released
Sep 20, 2026
Regions
42

Rollout timeline by region

The date each region code (CSC) first received X406BXXS8CZI2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
EUXEurope (Multi-CSC)Sep 20, 2026day 0X406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
EUYEurope (Multi-CSC)Sep 20, 2026day 0X406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
ACRGhanaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
AFGAfghanistanSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
AFRAfricaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
CAUCaucasusSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
DKRSenegalSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
ECTNigeriaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
EGYEgyptSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
KSASaudi ArabiaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
LYSLibyaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
MIDMiddle EastSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
MM1Singapore (M1)Sep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
MWDMoroccoSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
PAKPakistanSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
SINSingapore (Singtel)Sep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
SKZKazakhstanSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
STHSingapore (StarHub)Sep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
THLThailandSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
TUNTunisiaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
TURTurkeySep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XFASouth AfricaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XFVSouth Africa (Vodacom)Sep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XIDIndonesiaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XMEMalaysiaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XNZNew ZealandSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XSAAustraliaSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XSGUnited Arab EmiratesSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XSPSingaporeSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XTCPhilippinesSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
XXVVietnamSep 21, 2026+1 dayX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
INSIndiaSep 23, 2026+3 daysX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
ILOIsraelSep 23, 2026+3 daysX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
AROArgentinaSep 29, 2026+9 daysX406BXXS8CZI2/X406BOWO8CZI2/X406BXXS8CZI2
BVOBoliviaSep 29, 2026+9 daysX406BXXS8CZI2/X406BOWO8CZI2/X406BXXS8CZI2
GTOGuatemalaSep 29, 2026+9 daysX406BXXS8CZI2/X406BOWO8CZI2/X406BXXS8CZI2
MXOMexicoSep 29, 2026+9 daysX406BXXS8CZI2/X406BOWO8CZI2/X406BXXS8CZI2
PEOPeruSep 29, 2026+9 daysX406BXXS8CZI2/X406BOWO8CZI2/X406BXXS8CZI2
TCEMexico (Telcel)Sep 29, 2026+9 daysX406BXXS8CZI2/X406BOWO8CZI2/X406BXXS8CZI2
ZTOBrazilSep 29, 2026+9 daysX406BXXS8CZI2/X406BOWO8CZI2/X406BXXS8CZI2
BRITaiwanOct 15, 2026+25 daysX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2
TGYHong KongOct 15, 2026+25 daysX406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2

Download and release notes

samloader download -m SM-X406B -r EUX -v X406BXXS8CZI2/X406BOXM8CZI2/X406BXXS8CZI2

Samsung's release notes and security patch level for this update: SM-X406B / EUX on doc.samsungmobile.com. What each part of the build number means: decode X406BXXS8CZI2.