On this page, we have managed to share the Doppio Stock ROM (Original firmware) for all Doppio Smartphone and Tablets.
All the following Doppio Stock ROM (zip file) contains the original Doppio 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.
Doppio SG402 Stock Firmware (Flash File)
Model: Doppio SG402
Country: All
Android Version: 5.1
How to Flash: Read Instructions
Download Size: 1 GB
Doppio U400 Stock Firmware (Flash File)
Model: Doppio U400
Country: All
Android Version: 6.0
How to Flash: Read Instructions
Download Size: 1 GB
Doppio U450 Stock Firmware (Flash File)
Model: Doppio U450
Country: All
Android Version: 6.0
How to Flash: Read Instructions
Download Size: 1 GB
Readme Once:
[*] After flashing (installing) the Doppio 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.
[*] Doppio USB Driver: If you are looking for the original USB Driver, then head over to the Doppio 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).