Hi Guys, recently i update my os on my blackberry 8820 4.22 to 4.5.182. I follow all the instruction download the os software load it. The problem is when i switch on my bb, the software run well except the network coverage is off. When i go in the menu for network i realise my phone didn't detect any network and if i switch on the network the bb swich off because of no network coverage and re initialise. When it didn't detect no network it swich off again it's like that my phone is lock. So i have to update again my phone with the software so to be able to swich it on again . Help me please !!!