Hi Homam, Please do not top-post on this mailing list. On 02/06/2014 11:37 AM, Homam Dabis wrote: > Cool. That worked. Can you please explain? > It seems that your modem firmware does not like +CGDATA command for some reason. Feel free to clean up the patch and enable this modem properly. You will most likely need to set a property in udevng based on the E303 USB hardware id. Then inside plugins/huawei.c set the quirk based on that property. Alternatively you can set the quirk based on the firmware / model revision. Regards, -Denis