You're device boots to a non JB state , that's good do not use Cydia eraser at this point.
Personally I would keep trying with the "count 20" fix , once I was sat there for hours doing it , my head was gone thought I'd lost my JB , I then went and asked Dutch what was going off and he advised me to do the "count 20" fix , now I didn't do it first time , it was hard to get it bang on but after another 6/7 attempts boom it worked.
You're device has no issues other than it can not execute the jailbreak , it's failing to process the boot into , this is the Pangu app not you're device.
Redline will stop the Pangu app from executing the JB , don't know why it stops the app from processing the boot into , do you have anyway of removing said redline with iFunbox ?
Cydia won't open untill you run the Pangu app