I installed the theme RacmanticPica (Adobe CS3 based theme) in installer, after that, I went into SMB to set the new theme, and it just froze.. Hard reset to turn off the phone, turn back on, and it froze at the Apple logo screen.. I had to do a restore.

Good news is ZiPhone 2.5 unlock is RESTORE RESISTANT! I only need to activate and jailbreak my phone.