Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I am running 4.5.91 currently on a rooted and unlocked Atrix.
Will I brick my phone by updating to 4.5.141 from OTA source?
Can I re-lock the boot-loader if that is the issue?
I don't think it's possible to re-lock the bootloader of a Atrix 4G. You should read this
Required, but never shown