OTA update feature requested from modem

Job ID: 32466642

Budget: $30 – $250 USD

I need a developer having good understanding about RAK modules specifically RAK46xx which is breakout board based on nRF52840.
I need someone to customize a bootloader from RAK so can perform OTA update from LTE modem. Updated firmware download from AWS is already done, and updated firmware is stored in SD Card, now need someone to copy new firmware from SD Card to RAK46xx flash memory and trigger restart.

Please bid if you are available and have experience working with this modules.