Have you followed my suggestion ? :
in line AT +EGMR=1,7,"IMEI_1" (with commas too) YOU MUST ENTER SPACE BETWEEN AT and +, so not AT+EG but AT +EG
However, I've had other suggestion to restore your IMEI if this will fail.
in line AT +EGMR=1,7,"IMEI_1" (with commas too) YOU MUST ENTER SPACE BETWEEN AT and +, so not AT+EG but AT +EG
However, I've had other suggestion to restore your IMEI if this will fail.