On this page, we have managed to share the Rinno Stock ROM (Original firmware) for all Rinno Smartphone and Tablets.
All the following Rinno Stock ROM (zip file) contains the original Rinno USB Driver, Flash Tool, and the Flash File. After Downloading the firmware, follow the instruction manual to flash or install the firmware on your device.
Rinno R350 Stock Firmware (Flash File)
Model: Rinno R350
Country: All
Android Version: 5.1
How to Flash: Read Instructions
Download Size: 387 MB
Rinno R355 Stock Firmware (Flash File)
Model: Rinno R355
Country: All
Android Version: 4.4.2
How to Flash: Read Instructions
Download Size: 462 MB
Rinno R455 Stock Firmware (Flash File)
Model: Rinno R455
Country: All
Android Version: 7.0
How to Flash: Read Instructions
Download Size: 2 GB
Rinno R550 Stock Firmware (Flash File)
Model: Rinno R550
Country: All
Android Version: 7.0
How to Flash: Read Instructions
Download Size: 1 GB
Readme Once:
[*] After flashing (installing) the Rinno Stock ROM on your device, you may need to flash (install) the IMEI using the IMEI tool provided with the firmware file. If you are going to flash the IMEI, then flash the Original IMEI that comes with your device.
[*] Rinno USB Driver: If you are looking for the original USB Driver, then head over to the Rinno USB Driver page.
[*] Request Firmware: If you are looking for any specific firmware that is not listed above, you can request it through the comment box below (do not request firmware through the contact page, or else it will be ignored).