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: Rooting with Magisk on A133 can be complex; some users report that patching the boot.img fails to boot even if the bootloader is unlocked.

To truly achieve firmware, you must update U-Boot (the bootloader). Stock U-Boot on the A133 is version 2018. Upgrading to U-Boot 2024.01 gives you:

| Variant | Advantages | Effort | |---------------------|----------------------------------------------|--------| | Android 13 GSI | Up-to-date security, Treble support | Medium | | LineageOS 20/21 | No vendor bloat, faster UI, privacy control | Medium | | Armbian (Ubuntu/Debian) | Full Linux desktop, mainline kernel | High | | PostmarketOS | Lightweight, Alpine-based, OTA updates | High |

— you don't just want a newer version; you want a version that fixes these architectural flaws.