Hi, I am having similar problems. I tried the process you described, but it still didn’t work. Chaning the baud rate to 2400 in the Arduino code gives readble serial output, but when I try the AT+IPR=19200 command, it does not work. Sending “AT” works ok. I cannot delete SMS messages in memory either. It seems the problem is that I cannot enter a command of more than about 5 characters long. It is really wierd. Can you please help? It is really frustrating and I cannot use my GPRS and I really need to.