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Realme C11/ C12/ C15/ C20/ C21 | How To Flash Custom ROM (Nusantara OS Android 11) RM6765

Complete Tutorial how to custom your Realme C11/ C12/ C15 (Mediatek) Using Nusantara OS and other custom ROM.

Things You should Know

  • Use at your own risk! I am not responsible for your actions
  • Take IMEI Backup !! Store backup on pc/sdcard (nvram, nvdata, nvcfcg)
  • Realme C11, C12, C15 share the same hardware, using MediaTek Helio G35
  • Tested and work for Realme C11 (RMX2185) Realme C12 (RMX2189) Realme C15 (RMX2180)
  • Make sure u are in the stock rom realme version 1.0 Helio G35
  • This tutorial can also be applied to other custom ROM
  • Support Android 10, 11, 12, 12L


Video Tutorial

The video tutorial is using Nusantara OS, if you use other custom ROM just replace the Nusantara OS with other custom ROM

List of Custom ROM For Realme C11/C12/C15 (MTK)

Other Files

List of Custom ROM For Realme C11/C12/C15 (MTK)

Unlock Bootloader

  • Install DeepTesting
  • Select In Depth Test, wait untill approved
  • reboot bootloader (select the indeep test menu)
  • fastboot flashing unlock
  • Choose Unlock
  • fastboot reboot

Flash custom recovery & vbmeta & Custom ROM

  • fastboot -w
  • fastboot erase userdata
  • fastboot --disable-verification flash vbmeta vbmeta.img
  • fastboot flash recovery filename.img
  • fastboot reboot bootloader
  • fastboot reboot recovery
  • backup nvram , nvdata, nfcfg
  • format data
  • reboot recovery
  • wipe dalvik data cache
  • flash custom ROM
  • reboot recovery
  • flash gapps + magisk (optional)