i have a BB5 mobile E71 RM-357 gray
when i flash it by USB-cable with Rm-346 firmware (vietnamese,... langua)
the congif key changed to 00000000000000000000 Unkowned provider .... and phone lock Sim ( sim not valid)
then i took it to mobile-shope to repair, when i recived camera not work (black screen and flashing) but moibile wroking (pm RM-346)
i flashed again to rm-357 but phone'camera not work too.
help me to fix it?
thank to reading.
(sorry, my English not good)