X816BXXS6DZB6 – Galaxy Tab S9+ 5G firmware

Build X816BXXS6DZB6 is a security update for the Galaxy Tab S9+ 5G (SM-X816B) on Android 16 (One UI 8). It first appeared on Samsung's servers on Mar 8, 2026 (method) and has reached 37 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 X816BXXS5DZA1 is blocked. Samsung still serves this file.

Model
SM-X816B
Android
Android 16
Type
Security
Bootloader bit
6
First released
Mar 8, 2026
Regions
37

Rollout timeline by region

The date each region code (CSC) first received X816BXXS6DZB6, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
INSIndiaMar 8, 2026day 0X816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XIDIndonesiaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOLE6DZB6/X816BXXS6DZB6
ACRGhanaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
AFRAfricaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
CAUCaucasusMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
DKRSenegalMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
ECTNigeriaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
EGYEgyptMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
EUXEurope (Multi-CSC)Mar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
EUYEurope (Multi-CSC)Mar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
ILOIsraelMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
KSASaudi ArabiaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
LYSLibyaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
MIDMiddle EastMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
MM1Singapore (M1)Mar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
MWDMoroccoMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
PAKPakistanMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
SEKUkraineMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
SERRussiaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
SINSingapore (Singtel)Mar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
SKZKazakhstanMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
STHSingapore (StarHub)Mar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
THLThailandMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
TUNTunisiaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XFASouth AfricaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XFESouth AfricaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XFVSouth Africa (Vodacom)Mar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XMEMalaysiaMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XNZNew ZealandMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XSGUnited Arab EmiratesMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XSPSingaporeMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XTCPhilippinesMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XXVVietnamMar 9, 2026+1 dayX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
BRITaiwanMar 10, 2026+2 daysX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
TGYHong KongMar 10, 2026+2 daysX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
TELAustralia (Telstra)Mar 10, 2026+2 daysX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6
XSAAustraliaMar 10, 2026+2 daysX816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6

Download and release notes

samloader download -m SM-X816B -r EUX -v X816BXXS6DZB6/X816BOXM6DZB6/X816BXXS6DZB6

Samsung's release notes and security patch level for this update: SM-X816B / EUX on doc.samsungmobile.com. What each part of the build number means: decode X816BXXS6DZB6.