Samsung firmware guides
How-tos for working with Samsung stock firmware on Galaxy phones and tablets. Start with the flashing guide if you have never used Odin.
Start here
- How to flash Samsung firmware with Odin. Download mode, the BL, AP, CP and CSC files, step-by-step flashing and common Odin errors.
- SamFirm tool: does it still work? What happened to the SamFirm downloader and where to get older builds.
All guides
- Odin download for Samsung: versions, Odin mode and errors. Which Odin version to use, how to get into Odin mode and what the Odin log errors mean.
- How to update Samsung firmware manually. Three ways to install stock firmware yourself: Settings, Smart Switch and Odin, and how to pick the right build.
- Fix "Firmware upgrade encountered an issue" on Samsung. What the Smart Switch recovery screen means and how to get the phone or tablet working again.
- Samsung CSC codes: list by country and how CSC works. Find your CSC, read multi-CSC codes like OXM and EUX, and what changing the region really involves.
- Samsung bootloop fix: phone stuck restarting on the logo. Steps from the least to the most invasive, from a forced restart to a full firmware reinstall.
- How to downgrade Samsung firmware. When a downgrade is possible, how the bootloader binary limits it and how to flash an older build.
- Where to download Samsung firmware: Frija, Bifrost, SamMobile and others. Desktop downloaders and firmware websites compared, including what each one can and cannot get.