Unlike Qualcomm’s EDL mode, MediaTek’s preloader is poorly documented. Flashing a custom ROM requires bypassing Secure Boot via MTKClient (Python tool) or SP Flash Tool with a custom DA (Download Agent). However, these tools cannot flash arbitrary partitions without breaking authentication.
A fully functional custom ROM (stable daily driver) for the Nokia 2.3 does not exist as of 2025. GSIs offer a glimpse of newer Android versions but cripple core telephony. Enthusiasts with advanced MTK flashing skills can experiment using MTKClient, but average users should avoid. The only sustainable solution is replacing the device or staying on stock Android 11 with debloating. Nokia 2.3 Custom Rom
adb sideload: in TWRP select Advanced → ADB Sideload → on PC adb sideload filename.zip.Search "XDA Developers Nokia 2.3" on Google. Go to the "Nokia 2.3" sub-forum. This is the only safe place to download TWRP images and Custom ROMs. Avoid random YouTube tutorials that ask you to download files from ad-ridden link shorteners. Optional: If using adb sideload : in TWRP
fastboot flash recovery pbrp_nokia23.img
fastboot reboot recovery
Note: Many users skip this and get stuck in a bootloop. This is crucial for Nokia devices. Search "XDA Developers Nokia 2
If you flash a Custom ROM on a Nokia 2.3 without disabling AVB, the phone will not boot because it thinks the software is corrupted. You need to flash a VBMeta image (or a patched vbmeta).