Hi, i´m having the following problem with a great amount of Q2501B modules:
- The module works fine, registers on the GSM network and GPRS
- After several days in field(vehicles) GSM registration for a specific operator (TIM-Brazil) does not work anymore.
- GSM registration does work with other operator, but not with the first one, even after restoring factory settings (at&w) and using DWLWIN to rewrite OpenAT.
PS: It happens in some modules, others work fine…