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Odin3 v3.12.3 Download for Windows

Download Odin3 v3.12.3 for Windows with the exact size and SHA-256 checksum. The first v3.12 build in our archive, from January 2016.

Updated by , Developer & creator of SamUpdater

Odin3 v3.12.3 is the first v3.12 build in our archive. It was compiled in January 2016, a few weeks before Samsung announced the Galaxy S7.

There’s one odd detail about it that I found while checking the files.

Older version

Odin3 v3.12.3

Checked

File Odin3-v3.12.3.zip
Size 1.15 MB / 1,150,898 bytes
Build 2016.1.21.1 (product version 3.12.3.0)
Executable header 32-bit Windows; minimum subsystem 5.1
Archive contents Odin3 v3.12.3.exe, Odin3.ini, README.txt
.lz4 firmware Not supported
SHA-2561bf654c8cf43a5d42939a6034d534cedd7486e40d9be42c8b1ef374ac67a83e2

This ZIP is hosted on getodintool.com. Compare the SHA-256 checksum after downloading.

What’s different in Odin3 v3.12.3

Its internal build number is 2016.1.21.1. That’s lower than the number inside v3.11.2, which reads 2016.07.04.1. So Odin version numbers and build numbers don’t always line up in order.

The layout is BL, AP, CP, CSC and UMS, with the Log, Options and Pit tabs. It’s the last v3.12 build that still calls the wipe option Nand Erase All.

Before you open Odin3 v3.12.3

The minimum subsystem version is a file-header value. I cannot confirm Windows 10 or 11 compatibility from that field alone. Check Samsung’s USB driver separately.

Compare the SHA-256 to check that you downloaded the copy listed here. A match does not establish that the program is safe. Keep Windows security checks enabled and review any SmartScreen warning before opening it.

Keep the exe and Odin3.ini together in one folder. Don’t run it from inside the ZIP.

When to use Odin3 v3.12.3

Go for it only if an older guide names v3.12.3. For anything newer, v3.13.1 and up are the safer picks.

Don’t tick Nand Erase All. It clears the whole storage, and you’ll lose everything on the phone.

If Odin stops with an error, look it up on my Odin errors page. The common ones are all explained there.

Not sure v3.12.3 is right for your device? Send me the model number on the contact page and I’ll check.