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Otto Stock ROM is the official Operating System (OS) of your Otto Device. The Stock ROM can be used to re-install the Operating System (OS), if in case you are facing any Software related issue, bootloop issue, IMEI issue.
The Otto Stock ROM can also be used to upgrade or downgrade the Operating System (OS) on your Otto Devices.
All the following Otto Stock ROM (zip file) contains the original Otto 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.
Download Otto 8X Stock ROM (original firmware)
Device Model Name : Otto 8X
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 700 MB
Download Otto A8 Plus Stock ROM (original firmware)
Device Model Name : Otto A8 Plus
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 553 MB
Download Otto A9 Stock ROM (original firmware)
Device Model Name : Otto A9
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 779 MB
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Download Otto F3 Pro Stock ROM (original firmware)
Device Model Name : Otto F3 Pro
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 698 MB
Download Otto F3s Stock ROM (original firmware)
Device Model Name : Otto F3s
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 711 MB
Download Otto F5 Stock ROM (original firmware)
Device Model Name : Otto F5
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 809 MB
Download Otto F7 Stock ROM (original firmware)
Device Model Name : Otto F7
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 682 + 810 MB
Download Otto F9 Stock ROM (original firmware)
Device Model Name : Otto F9
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 600 MB
Download Otto G6 Stock ROM (original firmware)
Device Model Name : Otto G6
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 546 MB
Download Otto J7 Stock ROM (original firmware)
Device Model Name : Otto J7
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 710 MB
Download Otto J7 Duo Stock ROM (original firmware)
Device Model Name : Otto J7 Duo
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 437 MB
Download Otto Mark II Stock ROM (original firmware)
Device Model Name : Otto Mark II
ROM Country : All
ROM Version : 6.0
How-to Flash : See Instructions
ROM File Size : 1 GB
Download Otto Mate 7 Plus Stock ROM (original firmware)
Device Model Name : Otto Mate 7 Plus
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 468 MB
Download Otto Note 8 Stock ROM (original firmware)
Device Model Name : Otto Note 8
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 778 + 816 MB
Download Otto P20 Stock ROM (original firmware)
Device Model Name : Otto P20
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 556 MB
Download Otto P20 Pro Stock ROM (original firmware)
Device Model Name : Otto P20 Pro
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 775 + 809 MB
Download Otto R11S Stock ROM (original firmware)
Device Model Name : Otto R11S
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 698 MB
Download Otto R15 Pro Stock ROM (original firmware)
Device Model Name : Otto R15 Pro
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 810 MB
Download Otto S9 Stock ROM (original firmware)
Device Model Name : Otto S9
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 817 MB
Download Otto S9 Plus Stock ROM (original firmware)
Device Model Name : Otto S9 Plus
ROM Country : All
ROM Version : 5.1, 4.4.2
How-to Flash : See Instructions
ROM File Size : 826 + 574 MB
Download Otto U2 Stock ROM (original firmware)
Device Model Name : Otto U2
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 467 + 469 MB
Download Otto V7 Plus Stock ROM (original firmware)
Device Model Name : Otto V7 Plus
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 784 + 810 MB
Download Otto V9 Stock ROM (original firmware)
Device Model Name : Otto V9
ROM Country : All
ROM Version : 5.1, 4.4.2
How-to Flash : See Instructions
ROM File Size : 456 + 809 MB
Download Otto V9 Plus Stock ROM (original firmware)
Device Model Name : Otto V9 Plus
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 682 MB
Download Otto Xs Max Stock ROM (original firmware)
Device Model Name : Otto Xs Max
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 673 MB
Download Otto Y69 Stock ROM (original firmware)
Device Model Name : Otto Y69
ROM Country : All
ROM Version : 5.1
How-to Flash : See Instructions
ROM File Size : 713 MB
Readme:
[#] After flashing (installing) the Otto Stock Firmware 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 Otto device.
[#] Take a Backup: If you are going to flash the above firmware on your Otto, then make sure to take a backup of your data as it will be deleted after flashing the stock firmware.[#] Request Otto Firmware: If you are looking for any specific Otto firmware that is not listed above, you can request it through the comment box below .
[#] Broken link? Report here.
[#] Have we missed any device model? Let us know by contacting us via comment box