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Hi All!
You can easily update the firmware of you SIM900A Module.
First of All, you have to get the version of your current firmware, you can get it with "AT+CGMR" AT command, after that you have to download the equivalent SIM900 firmware from **broken link removed**
(Check if your module...
Hy All!
I bought a SIM900A module from China on Ebay, I use an active Telenor Sim Card... But if I want to check the CPIN? It send an Error "Sim not Inserted"... but the Sim is inside.. If I test the AT+COPS? command the answer is "0" ( which means the module will connect to the network...
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