You need TWRP (Team Win Recovery Project) compiled for the C100. Flash the .img file via fastboot:
Since the C100 uses a MediaTek processor, you bypass official unlock using MTKClient (Python script) to send a bootloader unlock command via USB. This wipes all data. nokia c100 custom rom better
If you own a Nokia C100 and you are frustrated by the lag, lack of storage, and ghastly update policy, flashing a custom ROM (specifically a lightweight GSI) is the single best upgrade you can perform. You transform a $99 frustration into a responsive tool. You need TWRP (Team Win Recovery Project) compiled
The Nokia C100 entered the budget smartphone arena as a reliable, no-frills device. Launched with Android 12 (Go Edition), it was designed for basic tasks: calling, texting, light browsing, and running simple apps. However, “stock” does not mean “perfect.” For many users, the C100 suffers from bloatware, sluggish performance, and a lack of software updates. If you own a Nokia C100 and you
fastboot flash recovery twrp_nokia_c100.img The Nokia C100 is Project Treble compatible. This means you don't need a device-specific ROM; you need a GSI . Download system-arm64-ab-gapps.img.xz from AndyYan’s LineageOS GSIs or Phhusson’s AOSP builds .