On this page, you will find the direct link to get the Otto J7 Duo Stock ROM (original firmware) on your Computer. The Stock ROM comes in a compressed zip package and contains the Flash File, Flash Tool, USB Driver, and How-to Flash Manual.
The stock firmware (ROM) helps you to re-install the Mobile Operating System on your Mobile Device. It also allows you to fix the Mobile device if it has any software error, IMEI, bootloop, and a mobile dead issue.
[*] Backup: If you are about to flash or install the above firmware on your device, then take a backup. As flashing or installing the firmware may wipe the data from the device.
[*] Original Firmware: On naijarom.com, we only distribute the original firmware released by the device manufacturer in its original state. We have scanned each of the Firmware (ROM) using Malwarebytes Premium before sharing it online.