A366EXXSCCZI1 – Galaxy A36 5G firmware

Build A366EXXSCCZI1 is a security update for the Galaxy A36 5G (SM-A366E) on Android 16 (One UI 8). It first appeared on Samsung's servers on Oct 20, 2026 (method) and has reached 9 regions so far. It keeps bootloader bit 12, so downgrading to the previous build A366EXXUCDZIF is still possible. Samsung still serves this file.

Model
SM-A366E
Android
Android 16
Type
Security
Bootloader bit
12
First released
Oct 20, 2026
Regions
9

Not yet released in 21 regions that are still on an older build: ARO, CAU, CDR, CHE, CHL, CHO, CHT, CRC, CTI, DOR, EBE, ECO, GLO, GTO and 7 more.

Rollout timeline by region

The date each region code (CSC) first received A366EXXSCCZI1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
COMColombia (Claro)Oct 20, 2026day 0A366EXXSCCZI1/A366EOWBCCZI1/A366EXXSCCZI1
IUSMexico (AT&T)Oct 22, 2026+2 daysA366EXXSCCZI1/A366EOWOCCZI1/A366EXXSCCZI1
MXOMexicoOct 22, 2026+2 daysA366EXXSCCZI1/A366EOWOCCZI1/A366EXXSCCZI1
TCEMexico (Telcel)Oct 22, 2026+2 daysA366EXXSCCZI1/A366EOWOCCZI1/A366EXXSCCZI1
TMMMyanmarOct 22, 2026+2 daysA366EXXSCCZI1/A366EOWOCCZI1/A366EXXSCCZI1
PEOPeruOct 22, 2026+2 daysA366EXXSCCZI1/A366EOWBCCZI1/A366EXXSCCZI1
PETPeru (Movistar)Oct 22, 2026+2 daysA366EXXSCCZI1/A366EOWBCCZI1/A366EXXSCCZI1
PNTPanamaOct 22, 2026+2 daysA366EXXSCCZI1/A366EOWBCCZI1/A366EXXSCCZI1
SAMOceaniaOct 22, 2026+2 daysA366EXXSCCZI1/A366EOWBCCZI1/A366EXXSCCZI1

Download and release notes

samloader download -m SM-A366E -r COM -v A366EXXSCCZI1/A366EOWBCCZI1/A366EXXSCCZI1

Samsung's release notes and security patch level for this update: SM-A366E / COM on doc.samsungmobile.com. What each part of the build number means: decode A366EXXSCCZI1.