Those of you that want to get back to the stock Atrix 4G 4.5.91 ROM for one reason or another here it is. Many of you are going to be involved in the upcoming soak testing and some just need it back to stock to get a replacement and are worried about warranty. Keep in mind that this image is for the AT&T Atrix 4G. Either way here are the instructions.

While we haven’t verified this, the ROM you flash here may or may not be able to receive OTA updates. Also you may not be able to flash to an older firmware after doing this without an unlocked bootloader.

Instructions to Flash Motorola Atrix 4G back to Stock 4.5.91:

1. Download the System image (Download Link)
2. Download moto-fastboot and install (Download Link)
3. Turn off your Atrix 4G
4. Boot the Atrix into “Fastboot Mode” (hold power + vol down)
5. plug your Atrix into your PC via USB
6. Navigate to your fastboot folder via command prompt
7. type “moto-fastboot flash boot boot.img” press enter
8. type “moto-fastboot flash system system.img” press enter
9. type “moto-fastboot -w” press enter
10. type “moto-fastboot reboot” press enter
11. Grats you now have the stock ROM when the Atrix turns back on

As always we aren’t responsible for your use of these instructions and its recommended that you have a working knowledge of the process before starting. This being said let us know if you have any questions and share your reasons and results with us.

Related posts:

1. Flash Motorola Atrix back to Stock
2. Flash the Droid X back to the Froyo 2.3.340 Stock ROM
3. Flash ASUS Transformer back to Stock 3.1
4. How to Flash the Evo 4G back to Stock
5. How to Flash Droid Bionic Back Stock