X820XXSBDZI2 – Galaxy Tab S10+ firmware

Build X820XXSBDZI2 is a security update for the Galaxy Tab S10+ (SM-X820) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 20, 2026 (method) and has reached 18 regions so far. It raises the bootloader bit from 10 to 11: once installed, the device no longer accepts firmware with bit 10 or lower, so a downgrade to X820ZCSADZH1 is blocked. Samsung still serves this file.

Model
SM-X820
Android
Android 16
Type
Security
Bootloader bit
11
First released
Sep 20, 2026
Regions
18

Rollout timeline by region

The date each region code (CSC) first received X820XXSBDZI2, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
KOOSouth KoreaSep 20, 2026day 0X820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
EUXEurope (Multi-CSC)Sep 27, 2026+7 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
EUYEurope (Multi-CSC)Sep 27, 2026+7 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
BNGBelgiumSep 28, 2026+8 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
INSIndiaSep 28, 2026+8 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
XACCanadaSep 28, 2026+8 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
XARUSA (Cellular South)Sep 28, 2026+8 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
XIDIndonesiaSep 29, 2026+9 daysX820XXSBDZI2/X820OLEBDZI2/X820XXSBDZI2
CAUCaucasusSep 29, 2026+9 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
XSPSingaporeSep 29, 2026+9 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
MXOMexicoSep 29, 2026+9 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
ZTOBrazilSep 29, 2026+9 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
XJPJapanOct 1, 2026+11 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
ILOIsraelOct 6, 2026+16 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
TURTurkeyOct 6, 2026+16 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
XSGUnited Arab EmiratesOct 6, 2026+16 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
BRITaiwanOct 14, 2026+24 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2
TGYHong KongOct 14, 2026+24 daysX820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2

Download and release notes

samloader download -m SM-X820 -r EUX -v X820XXSBDZI2/X820OXMBDZI2/X820XXSBDZI2

Samsung's release notes and security patch level for this update: SM-X820 / EUX on doc.samsungmobile.com. What each part of the build number means: decode X820XXSBDZI2.