X526BXXSACZH6 – Galaxy Tab S10 FE 5G firmware

Build X526BXXSACZH6 is a security update for the Galaxy Tab S10 FE 5G (SM-X526B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 7, 2026 (method) and has reached 44 regions so far. It raises the bootloader bit from 9 to 10: once installed, the device no longer accepts firmware with bit 9 or lower, so a downgrade to X526BXXS9CZG3 is blocked. Samsung still serves this file.

Model
SM-X526B
Android
Android 16
Type
Security
Bootloader bit
10
First released
Sep 7, 2026
Regions
44

Rollout timeline by region

The date each region code (CSC) first received X526BXXSACZH6, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
CAUCaucasusSep 7, 2026day 0X526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
EUXEurope (Multi-CSC)Sep 7, 2026day 0X526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
EUYEurope (Multi-CSC)Sep 7, 2026day 0X526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
SKZKazakhstanSep 7, 2026day 0X526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
TURTurkeySep 7, 2026day 0X526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
ACRGhanaSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
AFGAfghanistanSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
AFRAfricaSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
DKRSenegalSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
ECTNigeriaSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
EGYEgyptSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
ILOIsraelSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
KSASaudi ArabiaSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
LYSLibyaSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
MIDMiddle EastSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
MM1Singapore (M1)Sep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
MWDMoroccoSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
PAKPakistanSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
SINSingapore (Singtel)Sep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
STHSingapore (StarHub)Sep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
THLThailandSep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
TUNTunisiaSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
XFASouth AfricaSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
XFVSouth Africa (Vodacom)Sep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
XIDIndonesiaSep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
XMEMalaysiaSep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
XNZNew ZealandSep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
XSAAustraliaSep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
XSGUnited Arab EmiratesSep 8, 2026+1 dayX526BXXSACZH6/X526BOJMACZH6/X526BXXSACZH6
XSPSingaporeSep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
XTCPhilippinesSep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
XXVVietnamSep 8, 2026+1 dayX526BXXSACZH6/X526BOLMACZH6/X526BXXSACZH6
GTOGuatemalaSep 10, 2026+3 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
MXOMexicoSep 10, 2026+3 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
PEOPeruSep 10, 2026+3 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
TCEMexico (Telcel)Sep 10, 2026+3 daysX526BXXSACZH6/X526BOWAACZH6/X526BXXSACZH6
TPAPanamaSep 10, 2026+3 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
UPOUruguaySep 10, 2026+3 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
UYOUruguaySep 10, 2026+3 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
ZTOBrazilSep 10, 2026+3 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
INSIndiaSep 11, 2026+4 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
SLKSri LankaSep 11, 2026+4 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
BRITaiwanSep 14, 2026+7 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6
TGYHong KongSep 14, 2026+7 daysX526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6

Download and release notes

samloader download -m SM-X526B -r EUX -v X526BXXSACZH6/X526BOXMACZH6/X526BXXSACZH6

Samsung's release notes and security patch level for this update: SM-X526B / EUX on doc.samsungmobile.com. What each part of the build number means: decode X526BXXSACZH6.