i wipre my nextel blackberry 7520 but my battery died in the middle of wiping it so i charge the phone and after it turn on it comes out with this error code 507, i plugg my phone into blackberry desktop manager and it doesn't seem like it is recognicing the phone anymore, i read that i have to wipe the device using javaloader which i downloaded but i have no idea how to use it. also i deleted the vendor.xml file which i read from another post. is there any especific instructions that i need to follow to get my phone working again???

please help!!!

507 means there is no OS on the device.

Wipe using Jl_cmdr (see our FAQ for instructions) and then reload the OS. Make sure everything is charged as it can take an hour or more to run the process.