3100b
 

whats the best solution for 3100b no network some time

before changing antenna switch just take a look at this picture, with multimeter check green and yelow tracks

I flash 3100b to 3100, the result is white screen, I try to flash it back to 3100b but still the same white screen, somebody said flash it back with the same version before I flash it, but I dont what version it before. any body can give me the solution