I restored my htc one to stock through ruu.exe.But there was difference between firmware, i had 4.19.161.11 and the one that i downloaded from htc1guru was 4.19.401.9 so i changed cid to 11111111 and i successfully restored to stock and i have s-off right now and i changed cid to its origional one .Tell htc is also disappeared and phone says it is test device.How to shut off tell htc and can i still receive ota updates ? Thanks..