Samsung Galaxy On5 (SM-G550T1) Firmware Overview
What is the latest SM-G550T1 firmware?
G550T1UVU2AQC4, released March 24, 2017 with Android 6.0.1. It is a feature update on bootloader binary 2. The archive holds 5 official builds across 1 region (CSC). Each one is the full stock ROM (flash file) for Odin, not an OTA patch.
Is the Samsung Galaxy On5 still getting updates?
Most likely not: there has been no new firmware since March 2017, so Android 6.0.1 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
Can I downgrade the SM-G550T1 firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 1 to 2:
- Binary 2 — since Dec 2016
- Binary 1 — since Jun 2016
A phone already on binary 2 rejects builds with a lower binary in Odin ("SW REV CHECK FAIL"), so it can go back to an earlier Android version only if that version has a binary 2 build. How to read a build number.
All SM-G550T1 firmware builds
| Build / PDA | Bit | Region (CSC) | Android | Date | Download Link |
|---|---|---|---|---|---|
|
G550T1UVU2AQC4
Feature update
|
2 | TMK | 6.0.1 |
2017-03-24 | Download |
|
G550T1UVU2AQC4
Feature update
|
2 | TMK | 6.0.1 |
2017-03-23 | Download |
|
G550T1UVS2APL1
Security update
|
2 | TMK | — |
2016-12-08 | Download |
|
G550T1UVU1APF1
Feature update
|
1 | TMK | — |
2016-12-08 | Download |
|
G550T1UVS2ARK2
Security update
|
2 | TMK | 6.0.1 |
N/A | Download |
How to Flash SM-G550T1 Firmware
Put the Samsung Galaxy On5 into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with Bit 2 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.