Fix Repartition Failed: Flash Firmware via Odin on Galaxy S25 Ultra

In this guide, we will show you the steps to fix the repartition failed error while flashing firmware via Odin on the Galaxy S25 Ultra. Flashing firmware on Samsung devices is quite an easy task, just load the AP, BL, CP, and CSC/Home_CSC file [depending on whether you want to format data or not] into Odin and flash them onto your device, which in turn should be booted in Download Mode.

However, things aren’t quite the same with the latest Samsung flagships, thanks to the introduction of Seamless Updates. Due to this, your device will now have dual slots A and B. Currently, your device will be booted to the active slot [let’s say it’s Slot A].

When an update arrives, it will be installed to the inactive slot [Slot B], and when you hit Reboot after installation, the slot change will take place, and now you’ll be on Slot B, which is our new Active Slot [hence Slot A will be our new inactive slot].

repartition failed odin - 1

This change of slots will happen with each new OTA update. While this isn’t something that a generic user needs to take care of, tech enthusiasts definitely need to take note of this new A/B slot. In this regard, one of the major impacting factors is the way we used to flash the firmware.

Now, you cannot simply load the five aforementioned files and flash them via Odin, there’s an additional requirement of flashing the PIT file as well. If you don’t do so and proceed to flash the firmware via Odin on the Galaxy S25 series, you’ll be greeted with the Repartition Failed error message, among others. Therefore, in this guide, we will show you the steps to address this problem. Follow along.

Fix Repartition Failed: Flash Firmware via Odin on Galaxy S25 Ultra

repartition failed odin - 2

Before starting, please take a complete device backup. Droidwin and its members wouldn’t be held responsible in case of a thermonuclear war, your alarm doesn’t wake you up, or if anything happens to your device, and data by performing the below steps.

  1. First off, download and install Samsung_USB_Drivers on your PC.
  2. Then, download and extract this new version of Odin Tool .
  3. Now, download the stock firmware for your device using SamFW or Frija .
  4. Then extract the firmware via 7-Zip. Go to the extracted folder and extract the CSC.tar.md5 file.
  5. You’ll again get a few files, including the all-important PIT file.
  6. Moving on, boot your device to the Download Mode .
  7. Then launch Odin and verify that your device is shown in the COM as well as the Logs section.
  8. Now load the AP, BL, CP, and the Home_CSC files [don’t use the normal CSC, see below for the reason] to their respective slots.
  9. Since we are using the PIT file, we will have to use the Home_CSC file. This is because the PIT file can only be used with the HOME CSC, not with the normal CSC .
  10. Then, check the Repartition box in the Options tab.
  11. Then go to the PIT tab, click on PIT, and load the PIT file. Now, hit Start.
  12. The flashing will now commence. Once done, your device will either boot to the stock recovery or a screen where it will ask you to do a format data. So, reset your device and it will then boot to the OS.
  • Odin Fail (Auth) Error: How to Fix
  • Samsung CSC or Home CSC: Which firmware file to Flash in Odin
  • Download Patched Odin to Flash Samsung Firmware
  • How to Fix Samsung Odin ‘FAIL! Blocked carrier’ Error
Google preferred - 3 Google preferred - 4

(Cancel Reply)

Δ