I'm quite new here. I just received my asus tf300 from my brother as he dont want to use it anymore. The sad thing is my tf300 is bootlooping. I don't what happen but one day it is suddenly bootlooping at the ASUS white logo. I try to re-flash the stock ROM but fail. During the bootloader, it said something like this
"Android cardhu-user bootloader ＜1.00 e＞ released by "US_epad-10.6.1.15.3-20130416" A03 Key Driver not found.. Booting OS
I dont know what does that mean. My tablet will bootloop and I can't shut down the tablet as I need to wait until the battery dried off. I try to re-flash using the technique in master guide help ([GUIDE] How to manually update/restore firmware (Tf700, TF300, TF101, possibly TF201))
but it won't work. I try few firmwares but i still does the same thing. I dont know how to use the fast boot as there is no USB icon in my bootloader. So I dont know what to do. And of course my tablet has no warranty anymore.
Any suggestion? Btw, my device is locked, not installed recovery cwm or twrp. so I dont know what to do. I searched everywhere to fix my device by cant get it done