At+cgatt=1 Error 148


#1

I have a Q2426B, which does not work in mexico, when ever I do the at+cgatt=1, I get an error 148. Does any one have this same problem?
I have a couple of firmware versions, this problem presents itself in versions: 6.41c, 6.51 and 6.57d. I have a couple of older modules that have version 6.41a and do not present the problem.

Any suggestions? I have tried to find version 6.41a, but I cannot seem to find it. Does any one have this version?

Thanks for your help.