Hi i m from India too. have been getting the error 30605 20447 20526. i use usb tethering with my jio and airtel networks for past year and none of this problem occurred. Now even after trying everything like reinstalling, twinking with files etc., i still cnt get it to work . if any1 have any solutions or any updates or any1 living in india with no such problems cud help, i wud be grateful.