Leo sat at his desk, the glow of a single lamp illuminating a Samsung Galaxy A01 that had seen better days. With only 2 GB of RAM and 16 GB of storage, the phone was a relic of a simpler time, struggling to keep up with the demands of modern apps.

Prerequisites: What You Need Before Flashing

Gather these tools before searching for a ROM:

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  • Download the specific TWRP .tar file for A01 (from XDA Developers Forum).
  • Open Odin3, click AP and select the TWRP .tar file.
  • In Odin options, uncheck Auto Reboot.
  • Flash. Once done, manually reboot to Recovery (Vol Up + Power) immediately.

If you are still holding onto one in 2025, you have likely noticed the slowdowns. The stock One UI Core (based on Android 10 or Go edition) can feel sluggish, and Samsung has long since stopped sending updates.

  • Download TWRP .tar for A01.
  • Open Odin → AP tab → select TWRP → Disable Auto Reboot → Flash.
  • Windows: Samsung drivers + Odin. macOS/Linux: heimdall or adb/fastboot.
  • Install ADB/fastboot tools.

Avoid "one-click ROM installer" websites. They are often malware.