We have a great JVM error fix for the Nextel Blackberry 7100i and the Nextel Blackberry 7520.  The first step to fix it is the wipe the handheld using your desktop manager and re-install the Blackberry radio software.  If your computer does not recognize the handheld, then bring it to us or send it to us.  Our software can wipe the handheld without having the computer recognize the handheld.  After it’s clean, we re-install the radio software and it’s as good as new.