I tried reflashing both eMMC and rootFS but to no avail. I took it to a phone store and they said just like my operator provider said that I need a new SIM and register it in some place at the airport and request my operator provider to activate my SIM. So I did, and after waiting for 1 hr of ******** nothing happened, called'em and they said that I may need to wait 24 hrs due to pressure on their tasks. Now, after a reboot with my new SIM, the IMEI code DOES show up and when I wanna check my credit, it tells me “SIM Card not ready”. And regarding the old SIM, I did try putting a thin paper between my SIM holder and the SIM Card, but nothing happened. I think I will wait for tomorrow, as only time can tell.