yes i know this bug, you must rename with other sfi file corresponding to
your firmware...
but you can update your blackberry and use latest sfi file and your phone is unlocked and updated.
you can manual unlock it too.
just press unlock, disconnect before blackberry unlocker try to restore and than manual press clear mep in mfi loader after this update your blackberry.
i have corrected this bug in newer version of my unlocker, but its not finished to share it.