X406BXXS5CZF2 – Galaxy Tab S10 Lite 5G firmware

Build X406BXXS5CZF2 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 Jun 29, 2026 (method) and has reached 42 regions so far. It raises the bootloader bit from 4 to 5: once installed, the device no longer accepts firmware with bit 4 or lower, so a downgrade to X406BXXU4CZE5 is blocked. Samsung still serves this file.

Model
SM-X406B
Android
Android 16
Type
Security
Bootloader bit
5
First released
Jun 29, 2026
Regions
42

Rollout timeline by region

The date each region code (CSC) first received X406BXXS5CZF2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ACRGhanaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
AFGAfghanistanJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
AFRAfricaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
CAUCaucasusJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
DKRSenegalJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
ECTNigeriaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
EGYEgyptJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
EUXEurope (Multi-CSC)Jun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
EUYEurope (Multi-CSC)Jun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
KSASaudi ArabiaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
LYSLibyaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
MIDMiddle EastJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
MM1Singapore (M1)Jun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
MWDMoroccoJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
PAKPakistanJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
SINSingapore (Singtel)Jun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
SKZKazakhstanJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
STHSingapore (StarHub)Jun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
THLThailandJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
TUNTunisiaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
TURTurkeyJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XFASouth AfricaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XFVSouth Africa (Vodacom)Jun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XIDIndonesiaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XMEMalaysiaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XNZNew ZealandJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XSAAustraliaJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XSGUnited Arab EmiratesJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XSPSingaporeJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XTCPhilippinesJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
XXVVietnamJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
ILOIsraelJun 29, 2026day 0X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
INSIndiaJun 30, 2026+1 dayX406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
AROArgentinaJul 1, 2026+2 daysX406BXXS5CZF2/X406BOWO5CZF2/X406BXXS5CZF2
BVOBoliviaJul 1, 2026+2 daysX406BXXS5CZF2/X406BOWO5CZF2/X406BXXS5CZF2
GTOGuatemalaJul 1, 2026+2 daysX406BXXS5CZF2/X406BOWO5CZF2/X406BXXS5CZF2
MXOMexicoJul 1, 2026+2 daysX406BXXS5CZF2/X406BOWO5CZF2/X406BXXS5CZF2
PEOPeruJul 1, 2026+2 daysX406BXXS5CZF2/X406BOWO5CZF2/X406BXXS5CZF2
TCEMexico (Telcel)Jul 1, 2026+2 daysX406BXXS5CZF2/X406BOWO5CZF2/X406BXXS5CZF2
ZTOBrazilJul 1, 2026+2 daysX406BXXS5CZF2/X406BOWO5CZF2/X406BXXS5CZF2
BRITaiwanJul 5, 2026+6 daysX406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2
TGYHong KongJul 5, 2026+6 daysX406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2

Download and release notes

samloader download -m SM-X406B -r EUX -v X406BXXS5CZF2/X406BOXM5CZF2/X406BXXS5CZF2

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 X406BXXS5CZF2.