I have already searched the forums and gathered some information but my question is I signed up for the $20 ATT Data only Tablet plan with a Tablet IMEI and they are mailing me a sim card. I just ordered the GL-X750v2 router to use with it. I was wanting to figure out do I need to change the IMEI with the AT Commands on the router to be the IMEI ATT has and if so does it stay permanently. Also what is the latest good firmware for me to use with WIFI access. I have used DDWRT and OpenWRT etc and also do I need to change any ttl settings or not. Thanks in advance.
Matthew