Galaxy A36 5G SM-A366E firmware
The latest stable build is A366EXXSCCZI1 (Android 16, security update), first released on Oct 20, 2026 – 17 days ago. Samsung has published 39 stable builds for this model since Feb 20, 2025: 32 security and 7 feature updates, from Android 15 to Android 17. The current bootloader (binary) version is 12. A device on bit 12 only accepts firmware with bit 12 or higher – see downgrading and the bootloader bit.
- Latest build
A366EXXSCCZI1- Released
- Oct 20, 2026
- Android
- Android 16
- Bootloader bit
- 12
- Regions
- 45
- Stable builds
- 39
Latest firmware by region (CSC)
Samsung builds firmware per region code (CSC). Pick the code that matches your device – it is shown under Settings › About phone › Software information › Service provider software version. Follow a code for its complete history.
| CSC | Region | Latest build | Android | Released | Builds |
|---|---|---|---|---|---|
ARO | Argentina | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
BKD | Bangladesh | A366EXXUCDZIF | Android 17 | Oct 21, 2026 | 18 |
BVO | Bolivia | A366EXXUCDZIF | Android 17 | Oct 27, 2026 | 19 |
CAU | Caucasus | A366EXXUCDZIF | Android 17 | Oct 18, 2026 | 18 |
CDR | Dominican Republic | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
CGU | Guatemala (Claro) | A366EXXUCDZIF | Android 17 | Oct 27, 2026 | 19 |
CHE | Chile (Entel) | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
CHL | Chile (Claro) | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
CHO | Chile | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
CHT | Chile (Movistar) | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
COB | Colombia (Movistar) | A366EXXUCDZIF | Android 17 | Oct 22, 2026 | 19 |
COL | Colombia | A366EXXUCDZIF | Android 17 | Oct 22, 2026 | 19 |
COM | Colombia (Claro) | A366EXXSCCZI1 | Android 16 | Oct 20, 2026 | 20 |
COO | Colombia | A366EXXUCDZIF | Android 17 | Oct 22, 2026 | 19 |
CRC | Costa Rica | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
CTI | Argentina (Claro) | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
DOR | Dominican Republic | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
EBE | Ecuador | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
ECO | Ecuador | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
GLO | Nigeria (Glo) | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
GTO | Guatemala | A366EXXUCDZIF | Android 17 | Oct 19, 2026 | 19 |
INS | India | A366EXXUCDZIF | Android 17 | Oct 21, 2026 | 20 |
IUS | Mexico (AT&T) | A366EXXUCDZIF | Android 17 | Oct 27, 2026 | 21 |
MXO | Mexico | A366EXXUCDZIF | Android 17 | Oct 27, 2026 | 21 |
NPB | Nepal | A366EXXUCDZIF | Android 17 | Oct 21, 2026 | 18 |
PEO | Peru | A366EXXSCCZI1 | Android 16 | Oct 22, 2026 | 19 |
PET | Peru (Movistar) | A366EXXSCCZI1 | Android 16 | Oct 22, 2026 | 19 |
PGU | Guatemala | A366EXXUCDZIF | Android 17 | Nov 5, 2026 | 19 |
PNT | Panama | A366EXXSCCZI1 | Android 16 | Oct 22, 2026 | 19 |
PSN | Argentina (Personal) | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
SAM | Oceania | A366EXXSCCZI1 | Android 16 | Oct 22, 2026 | 19 |
SER | Russia | A366EXXUCDZIF | Android 17 | Oct 18, 2026 | 18 |
SKZ | Kazakhstan | A366EXXUCDZIF | Android 17 | Oct 18, 2026 | 18 |
SLK | Sri Lanka | A366EXXUCDZIF | Android 17 | Oct 21, 2026 | 18 |
TCE | Mexico (Telcel) | A366EXXUCDZIF | Android 17 | Oct 27, 2026 | 21 |
TGP | Paraguay | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
TMM | Myanmar | A366EXXUCDZIF | Android 17 | Oct 27, 2026 | 21 |
TPA | Panama | A366EXXUCDZIF | Android 17 | Oct 22, 2026 | 19 |
UFN | Argentina (Movistar) | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
UPO | Uruguay | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
UYO | Uruguay | A366EXXSCCZH3 | Android 16 | Sep 3, 2026 | 18 |
ZTA | Brazil (Claro) | A366EXXUCDZIF | Android 17 | Oct 20, 2026 | 20 |
ZTM | Brazil (TIM) | A366EXXUCDZIF | Android 17 | Oct 20, 2026 | 20 |
ZTO | Brazil | A366EXXUCDZIF | Android 17 | Oct 20, 2026 | 20 |
ZVV | Brazil (Vivo) | A366EXXUCDZIF | Android 17 | Oct 20, 2026 | 20 |
Firmware history (39 builds)
Every stable build (PDA version) Samsung has published for the SM-A366E, newest first. “” is the earliest date the build appeared on Samsung's servers in any region. “” means Samsung no longer serves the file for that build.
| Build (PDA) | Released | Android | Type | Bit | Regions | File |
|---|---|---|---|---|---|---|
A366EXXSCCZI1 | Oct 20, 2026 | Android 16 | Security | 12 | 9 | on server |
A366EXXUCDZIF | Oct 18, 2026 | Android 17 | Feature | 12 | 23 | on server |
A366EXXSCCZH3 | Sep 3, 2026 | Android 16 | Security | 12 | 38 | on server |
A366EXXSCCZH1 | Sep 2, 2026 | Android 16 | Security | 12 | 3 | on server |
A366EXXSCCZH2 | Sep 2, 2026 | Android 16 | Security | 12 | 4 | on server |
A366EXXSBCZG3 | Aug 4, 2026 | Android 16 | Security | 11 | 38 | on server |
A366EXXSBCZG2 | Aug 4, 2026 | Android 16 | Security | 11 | 4 | on server |
A366EXXSBCZG1 | Aug 2, 2026 | Android 16 | Security | 11 | 3 | on server |
A366EXXSACZF3 | Jun 30, 2026 | Android 16 | Security | 10 | 38 | on server |
A366EXXSACZF2 | Jun 29, 2026 | Android 16 | Security | 10 | 4 | on server |
A366EXXSACZF1 | Jun 29, 2026 | Android 16 | Security | 10 | 3 | on server |
A366EXXSACZE4 | Jun 2, 2026 | Android 16 | Security | 10 | 38 | on server |
A366EXXSACZE5 | Jun 1, 2026 | Android 16 | Security | 10 | 4 | on server |
A366EXXSACZE3 | Jun 1, 2026 | Android 16 | Security | 10 | 3 | on server |
A366EXXU9CZDF | May 21, 2026 | Android 16 | Feature | 9 | 38 | on server |
A366EXXU9CZDD | May 21, 2026 | Android 16 | Feature | 9 | 7 | on server |
A366EXXS9BZDB | May 6, 2026 | Android 16 | Security | 9 | 4 | on server |
A366EXXS9BZDA | May 5, 2026 | Android 16 | Security | 9 | 41 | on server |
A366EXXS8BZC3 | Apr 2, 2026 | Android 16 | Security | 8 | 4 | on server |
A366EXXS8BZC2 | Mar 29, 2026 | Android 16 | Security | 8 | 41 | on server |
A366EXXS8BZB7 | Mar 16, 2026 | Android 16 | Security | 8 | 4 | on server |
A366EXXS8BZB6 | Mar 10, 2026 | Android 16 | Security | 8 | 41 | on server |
A366EXXS7BZA2 | Jan 26, 2026 | Android 16 | Security | 7 | 4 | on server |
A366EXXS7BZA1 | Jan 22, 2026 | Android 16 | Security | 7 | 41 | on server |
A366EXXS6BYL1 | Dec 29, 2025 | Android 16 | Security | 6 | 38 | on server |
A366EXXU5BYK5 | Dec 1, 2025 | Android 16 | Feature | 5 | 45 | on server |
A366EXXS5BYK4 | Nov 24, 2025 | Android 16 | Security | 5 | 4 | on server |
A366EXXS5BYK3 | Nov 21, 2025 | Android 16 | Security | 5 | 41 | on server |
A366EXXU4BYI7 | Sep 28, 2025 | Android 16 | Feature | 4 | 45 | on server |
A366EXXS4AYH9 | Sep 7, 2025 | Android 15 | Security | 4 | 41 | on server |
A366EXXS4AYHA | Aug 31, 2025 | Android 15 | Security | 4 | 4 | on server |
A366EXXS4AYG1 | Jul 22, 2025 | Android 15 | Security | 4 | 4 | on server |
A366EXXS4AYF9 | Jul 20, 2025 | Android 15 | Security | 4 | 41 | on server |
A366EXXS3AYF1 | Jun 30, 2025 | Android 15 | Security | 3 | 9 | on server |
A366EXXU2AYD8 | May 12, 2025 | Android 15 | Feature | 2 | 45 | on server |
A366EXXS2AYC6 | Apr 24, 2025 | Android 15 | Security | 2 | 38 | on server |
A366EXXS2AYC7 | Apr 16, 2025 | Android 15 | Security | 2 | 4 | on server |
A366EXXS2AYC4 | Apr 14, 2025 | Android 15 | Security | 2 | 3 | on server |
A366EXXU1AYB9 | Feb 20, 2025 | Android 15 | Feature | 1 | 45 | on server |
Beta and test builds
Samsung's servers also list 2 beta build(s) for this model. They are not offered to regular users and are often removed after the next stable release.
| Build | Listed | File |
|---|---|---|
A366EXXUCZZIA | Sep 17, 2026 | pulled |
A366EXXUCZZHI | Sep 3, 2026 | pulled |
How to download SM-A366E firmware
We do not host firmware. Download it directly from Samsung's servers with a free open-source tool, for example samloader:
samloader download -m SM-A366E -r INSReplace INS with your region code. Step-by-step instructions, including a graphical alternative:
How to download Samsung firmware.
Changelog and security patch level
Samsung publishes the release notes for each update, including the security patch level, on its own site. They are listed per region – for example SM-A366E / INS release notes on doc.samsungmobile.com. Each region page here links to the notes for that code.