Jun 8, 2017 #1 S sudeep001 Newbie level 1 Joined Jun 8, 2017 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 4 Hey All, Facing issue with the firmware upgrade of SIM900A. Please refer the screen print. Attachments SIM900AError.png 20.4 KB · Views: 81