Hello guys all, I've got 2 Coolpad F1 8297, not the W type, one is stuck again.... The first time it stopped iI tried flashing and get it working butI loose IMEIS and some datas in nvram folder, so no phone anymore.. Now I cannot boot. Recovery mode cannot update from SDcard,  I get an error about fixing permissions and installation abort. I don't know if it is rooted and if I need it rooted to get things working.. Nor YGDP or SP flash tools gives any result, n