The Motorola Atrix 4G is a popular device these days still a year after its release. The issue we have here is that Motorola pushes out OTA updates and if you try to get that update without flashing to a completely stock ROM, Stock Recovery and Unroot the device you will brick it.
Those of us who have bricked our Atrix with the most recent 4.5.141 update have noticed that there are a lot of people complaining that their devices are bricked with the error “Failed to Boot 4” as well as Starting RSD under the error.
Don’t worry your device can be recovered and its a pretty easy process as all you need to do is flash the 4.5.141 ROM with RSD Lite and presto your device is back in working order.
Instructions to unbrick your Atrix on Error “Failed to Boot 4”:
https://android-advice.com/2012/fix-bricked-motorola-atrix-after-ota-update/
Most people that still have a Motorola Atrix will notice that when trying to root the device or use it for anything besides a stock phone it will error out. It is best if you have an Atrix that you root the device and don’t ever update. This being said the device has now been out long enough that after fixing the failed to boot 4 error from an update there may never be another one anyway.
If you have had this error and fixed it please let us know as we would like to hear about individual stories to help others with the same error in the event there is an influence that we didn’t notice or get ourselves when fixing the error. Otherwise I hope that you get it fixed and that everything goes well, also keep in mind that these devices make great music players if you disable the phone after rooting the device (this is all assuming you first fixed the failed to boot issue).