A276BXXS3AZI1 – Galaxy A27 5G firmware
Build A276BXXS3AZI1 is a security update for the Galaxy A27 5G (SM-A276B)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Oct 20, 2026 (method) and has reached
4 regions so far. It keeps bootloader bit 3, so downgrading to the previous build A276BXXU3BZIF is still possible. Samsung still serves this file.
- Model
- SM-A276B
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 3
- First released
- Oct 20, 2026
- Regions
- 4
Not yet released in 62 regions that are still on an older build: ACR, AFG, AFR, ARO, BKD, CAU, CDR, CHE, CHL, CHO, CHT, CRC, CTI, DKR and 48 more.
Rollout timeline by region
The date each region code (CSC) first received A276BXXS3AZI1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
COM | Colombia (Claro) | Oct 20, 2026 | day 0 | A276BXXS3AZI1/A276BOWO3AZI1/A276BXXS3AZHA |
IUS | Mexico (AT&T) | Oct 20, 2026 | day 0 | A276BXXS3AZI1/A276BOWO3AZI1/A276BXXS3AZHA |
MXO | Mexico | Oct 20, 2026 | day 0 | A276BXXS3AZI1/A276BOWO3AZI1/A276BXXS3AZHA |
TCE | Mexico (Telcel) | Oct 20, 2026 | day 0 | A276BXXS3AZI1/A276BOWO3AZI1/A276BXXS3AZHA |
Download and release notes
samloader download -m SM-A276B -r COM -v A276BXXS3AZI1/A276BOWO3AZI1/A276BXXS3AZHASamsung's release notes and security patch level for this update: SM-A276B / COM on doc.samsungmobile.com. What each part of the build number means: decode A276BXXS3AZI1.