X406BXXS6CZG3 – Galaxy Tab S10 Lite 5G firmware

Build X406BXXS6CZG3 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 Jul 29, 2026 (method) and has reached 42 regions so far. It raises the bootloader bit from 5 to 6: once installed, the device no longer accepts firmware with bit 5 or lower, so a downgrade to X406BXXS5CZF2 is blocked. Samsung still serves this file.

Model
SM-X406B
Android
Android 16
Type
Security
Bootloader bit
6
First released
Jul 29, 2026
Regions
42

Rollout timeline by region

The date each region code (CSC) first received X406BXXS6CZG3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACRGhanaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
AFGAfghanistanJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
AFRAfricaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
CAUCaucasusJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
DKRSenegalJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
ECTNigeriaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
EGYEgyptJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
EUXEurope (Multi-CSC)Jul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
EUYEurope (Multi-CSC)Jul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
KSASaudi ArabiaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
LYSLibyaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
MIDMiddle EastJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
MWDMoroccoJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
PAKPakistanJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
SKZKazakhstanJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
THLThailandJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
TUNTunisiaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
TURTurkeyJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XFASouth AfricaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XFVSouth Africa (Vodacom)Jul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XIDIndonesiaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XMEMalaysiaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XNZNew ZealandJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XSAAustraliaJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XSGUnited Arab EmiratesJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XTCPhilippinesJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XXVVietnamJul 29, 2026day 0X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
AROArgentinaJul 30, 2026+1 dayX406BXXS6CZG3/X406BOWO6CZG3/X406BXXS6CZG3
BVOBoliviaJul 30, 2026+1 dayX406BXXS6CZG3/X406BOWO6CZG3/X406BXXS6CZG3
GTOGuatemalaJul 30, 2026+1 dayX406BXXS6CZG3/X406BOWO6CZG3/X406BXXS6CZG3
MXOMexicoJul 30, 2026+1 dayX406BXXS6CZG3/X406BOWO6CZG3/X406BXXS6CZG3
PEOPeruJul 30, 2026+1 dayX406BXXS6CZG3/X406BOWO6CZG3/X406BXXS6CZG3
TCEMexico (Telcel)Jul 30, 2026+1 dayX406BXXS6CZG3/X406BOWO6CZG3/X406BXXS6CZG3
ZTOBrazilJul 30, 2026+1 dayX406BXXS6CZG3/X406BOWO6CZG3/X406BXXS6CZG3
MM1Singapore (M1)Aug 2, 2026+4 daysX406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
SINSingapore (Singtel)Aug 2, 2026+4 daysX406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
STHSingapore (StarHub)Aug 2, 2026+4 daysX406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
XSPSingaporeAug 2, 2026+4 daysX406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
INSIndiaAug 3, 2026+5 daysX406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
ILOIsraelAug 4, 2026+6 daysX406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
TGYHong KongAug 11, 2026+13 daysX406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3
BRITaiwanAug 11, 2026+13 daysX406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3

Download and release notes

samloader download -m SM-X406B -r EUX -v X406BXXS6CZG3/X406BOXM6CZG3/X406BXXS6CZG3

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 X406BXXS6CZG3.