Also, if you lost connection in the middle of an update and now your blackberry will not boot up, you will have to reinstall the OS. What do you see when you power on the device? If you see 507 error, then all you will need to do is install the OS.
If you have other issues, you'll need to wipe the device before you can install the OS. In that case, see http://www.blackberryfaq.com/index.p...ng_Jl_Cmder%3F http://www.blackberryfaq.com/index.p...nnect_and_wipe