For years, this process required deep knowledge of Linux command lines, mkuserimg.sh , simg2img , and Python scripts. But the landscape has changed. Today, have democratized this space. These GUI-based or single-command utilities allow anyone to modify system partitions in minutes.
Download one of the tools above, grab a stock ROM for an old phone, and repack it. Remove the bloat, add your custom boot animation, and flash it back. In under 10 minutes, you’ll understand why auto tools are now essential for Android ROM development. Disclaimer: Modifying ROMs requires an unlocked bootloader. Always keep a full backup of your original firmware. The author is not responsible for bricked devices.
[INFO] Detected dynamic partitions: system, system_ext, product, vendor [INFO] Running lpunpack --slot=0 super.img [INFO] Mounting system.img as loop device... [INFO] Extracting 4,542 files from system... [SUCCESS] Unpack complete in 22 seconds. You now have a ROM_Dump folder. Navigate to system/system/app/ and delete unwanted APKs (e.g., Facebook , Chrome ). Open system/system/build.prop with Notepad++. Auto tools preserve formatting, so you can safely edit:
Introduction: The Art of ROM Manipulation In the world of Android customization, the ability to modify a ROM (Read-Only Memory) image is the holy grail for developers, themers, and power users. Whether you want to de-bloat a stock firmware, port a feature from one device to another, or create a custom recovery flashable ZIP, you face a common challenge: How do you break down a massive .img or .dat file into editable files, then rebuild it without errors?
