Originally Posted by shavon21
I have a AT&T HTC One M8 Gold edition. I bought the phone from someone and it was rooted at first. I tried doing a factory reset through the phone settings and for some reason, I kept getting "cannot reach Google servers" every time I opened the Play Store. I read online that it might have to do with the ROM installed on it by the previous owner. Long story short, after messing with the unlocked boot loader on S-ON, I deleted the OS and cannot get past the HTC Logo at startup. I am able to go into recovery however in TWRP.
Not completely clear, but it sounds like you are surprised that deleting the OS has rendered the phone unable to boot? Of course not OS means the phone will not be able to boot.
It seems like you are improvising a bit too much with your phone. Unless you are an experienced user, and confidant in what you are doing (you already state this is not the case) I would recommend sticking to established guides posted on XDA; or advice from experienced/reputable users here. Fiddling with phone while having a fundamental lack of knowledge and understanding is the main problem that has gotten you to this point.
Your PC isn't connecting to the phone by adb/fastboot. So nothing you are trying to do is going to work, including S-off, Toolkit, side loading, etc. You are going to have to troubleshoot the connection problem first. USB connection with HTC devices can be really finicky, and the cause of headaches for many here in my experience on other devices. You've already tried other computers, and USB ports. Try to unistall Sync Manager and drivers, and reinstall. Try adb with the Sync Manager removed, but HTC drivers still installed. Also, only try with Windows 7 or earlier. I think Win8.1 straight out will not work with this device; Win8 might work, but I wouldn't count on it.
I think some folks have also had luck removing HTC Sync, then (with phone connected) go to Windows Device Manager and manually clicking on the device and installing drivers through Device Manager.
I don't think S-off is needed to sideload. But as mentioned, this doesn't matter anyway, unless you fix the fundamental adb connection issue. I also would recommend just adb push to the phone's memory while in TWRP (once you get adb working). Then flash the ROM from TWRP once the ROM is on the phone's internal SD. I've seen at least one person here have issues sideload flashing when adb push (then flash in TWRP) worked perfectly: http://forum.xda-developers.com/show....php?t=2751705
---------- Post added at 09:23 AM ---------- Previous post was at 09:16 AM ----------
Originally Posted by an0ther
Check your pm.
If you are trying to help the OP, is there a reason to hide your advice in PM, instead of posting it here, where it may help others in the community with the same of similar issue?
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Phone: AT&T HTC One (M8)
Tablet: Samsung Galaxy Tab Pro 8.4 (WiFi only)