But even after doing all that still won't work, at least for me.
The fact that you see the logo picture (right?) means that bootloader is still there which is the one and only part needed for the CPU to boot. I bricked mine also at this stage and i thought it was impossible to recover... after that i attached a serial cable which if you have will tell you 100% the current state, and then i noticed that it didn't found the right partition from USB to boot... then i put the stick on a linux system, formated, made it active, and the voila... it was booting every time!!!.. although it took me several hours more to find the RIGHT image to load as the CPU has some kind of encryption keys to load the firmware which if it is not right it never loads...
Thanks a lot for your help! Yes, I see the logo picture. I got the usb formatted and recognized/booting. All I have to do now is to find the right image for my system. I don't think is going to be easy finding the correct image, I have spent hours looking for it to no avail. Regards Angelo