maybe this solution can work,
* Blackberry (8100,8110,8120,8310,8320,8900,9000,9500)
* Draft Rtas "Only 8900,9000,9500" the other a standard Loader
* MFI Multiloader
* Radio Lab Tools
1. run the Loader or Rtas draft "without battery"
2. Connect with Radio Lab Tools
3. after that says "Connect" at Radio Lab Tools
4. open MFI Multiloader deselect the "Auto Start"
5. Then open the hidden menu by pressing "ctrl + alt + shift + F12"
6. Press "Clear MEP" If you did everything right will say "MEP file loaded
successfully "
7. Now reload the OS
8. And now you will see mep 0 reset