S938BXXSDDZJ1 – Galaxy S25 Ultra firmware
Build S938BXXSDDZJ1 is a security update for the Galaxy S25 Ultra (SM-S938B)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 21, 2026 (method) and has reached
90 regions so far. It raises the bootloader bit from 12 to 13: once installed, the device no longer accepts firmware with bit 12 or lower, so a downgrade to S938BXXUCDZIF is blocked. Samsung still serves this file.
- Model
- SM-S938B
- Android
- Android 17
- Type
- Security
- Bootloader bit
- 13
- First released
- Oct 21, 2026
- Regions
- 90
Rollout timeline by region
The date each region code (CSC) first received S938BXXSDDZJ1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
EUY | Europe (Multi-CSC) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
BOG | France (Bouygues) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
MEO | Portugal (MEO) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
MOB | Austria (A1) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
MOT | Slovenia (Telekom) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
MSR | Serbia | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
PLS | Poland (Plus) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
PRT | Poland (Play) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
SFR | France (SFR) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
SIM | Slovenia (A1) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
SWC | Switzerland | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
TOP | Serbia/Montenegro | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
TUR | Turkey | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
VIP | Croatia (A1) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
EUX | Europe (Multi-CSC) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
CAU | Caucasus | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
SER | Russia | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
SKZ | Kazakhstan | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
ACR | Ghana | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
AFG | Afghanistan | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
AFR | Africa | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
DKR | Senegal | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
ECT | Nigeria | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
EGY | Egypt | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
ILO | Israel | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
KSA | Saudi Arabia | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
LYS | Libya | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
MID | Middle East | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
MWD | Morocco | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
PAK | Pakistan | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
PKD | Pakistan | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
TUN | Tunisia | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XFA | South Africa | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XFV | South Africa (Vodacom) | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XSG | United Arab Emirates | Oct 21, 2026 | day 0 | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
GLB | Philippines (Globe) | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
MM1 | Singapore (M1) | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
OPS | Australia (Optus) | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
SIN | Singapore (Singtel) | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
STH | Singapore (StarHub) | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
TEL | Australia (Telstra) | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
THL | Thailand | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
VAU | Australia (Vodafone) | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XID | Indonesia | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XME | Malaysia | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XNZ | New Zealand | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XSA | Australia | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XSP | Singapore | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XTC | Philippines | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
XXV | Vietnam | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
BNG | Belgium | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
INS | India | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
NPB | Nepal | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
SLK | Sri Lanka | Oct 22, 2026 | +1 day | S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1 |
ARO | Argentina | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
BVO | Bolivia | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
COB | Colombia (Movistar) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
COL | Colombia | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
COO | Colombia | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
CTI | Argentina (Claro) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
GTO | Guatemala | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
IUS | Mexico (AT&T) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
MXO | Mexico | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
PSN | Argentina (Personal) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
TCE | Mexico (Telcel) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
TMM | Myanmar | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
TPA | Panama | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
UFN | Argentina (Movistar) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
ZTA | Brazil (Claro) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
ZTM | Brazil (TIM) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
ZTO | Brazil | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
ZVV | Brazil (Vivo) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
CGU | Guatemala (Claro) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
CRC | Costa Rica | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
DOR | Dominican Republic | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
GLO | Nigeria (Glo) | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
PGU | Guatemala | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
TGP | Paraguay | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
UPO | Uruguay | Oct 27, 2026 | +6 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
CHE | Chile (Entel) | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
CHL | Chile (Claro) | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
CHO | Chile | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
CHT | Chile (Movistar) | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
EBE | Ecuador | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
ECO | Ecuador | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
PEO | Peru | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
PET | Peru (Movistar) | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
PNT | Panama | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
SAM | Oceania | Oct 29, 2026 | +8 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
CDR | Dominican Republic | Nov 3, 2026 | +13 days | S938BXXSDDZJ1/S938BOWODDZJ1/S938BXXSDDZJ1 |
Download and release notes
samloader download -m SM-S938B -r EUX -v S938BXXSDDZJ1/S938BOXMDDZJ1/S938BXXSDDZJ1Samsung's release notes and security patch level for this update: SM-S938B / EUX on doc.samsungmobile.com. What each part of the build number means: decode S938BXXSDDZJ1.