Unlocking Atrix 4G Bootloader 4.5.145, and flash 'romracer's ClockWorkMod (CWM) recovery image:
NOTE: the OEM ROM will not boot once the phone is unlocked, so be prepared to flash a new ROM!
1. Extract 4547-fix-try2.sbf and fastboot files (to C:\unlock\ or whereever)
2. Install RSDLite & open RSDLite.
3. Power off your phone and back on (will reboot automatically if connected to USB). Hold volume down until you see "fastboot" at the top of the screen. Press the volume down until you see "RSD" then press volume up button. It'll say "Starting RSD Protocol"
4. You'll see that RSDLite has detected your phone in the menu. ("SE Flash Olympus")
5. Now Click the "..." button in RSDLite & navigate to the 4547-fix-try2.sbf file, then click Start.
6. Wait until you phone restarts and you see a "Failed to boot 0x1000" error. (Just ignore it. Cause we're gonna flash a new ROM anyway).
7. It will auto-start RSD mode and say "Starting Fastboot protocol support"
8. Open Command Prompt with Admin Privilege and change directory (cd) to the extracted fastboot files.
9. Run:
fastboot devices
To verify if your devices is recognized
10. Run:
fastboot oem unlock
To get the unique ID to unlock your phone.
(bootloader) Unlocking your device can permanently VOID your warranty.
(bootloader) This process cannot be reversed. If you wish to proceed,
(bootloader) reissue the unlock OEM command containing the unique ID
(bootloader) of your device: {your unique device ID}
11. Finally, run:
fastboot oem unlock {the id given in the previous step}
12. Hopefully the phone says "Device is now unlocked." and the cmd window shows:
(bootloader) Device is now unlocked
OKAY
finished.
ClockWork Mod recovery:
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Note: http://forum.xda-developers.com/showthread.php?t=1154600
If you already have a different version of CWM Recovery installed, and want to switch to RomRacer's, then first check to see if a file labeled "install-recovery.sh" @ /system/etc/. If the file is there, delete it, before proceeding with the install of RomRacer's version.
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13. Erase the recovery:
fastboot erase recovery
14. Then flash romracer's CWM recovery:
fastboot flash recovery recovery.img