EMDK 3.0 OS UPDATE ISSUE.

Hi,

 

I placed my factory reset zip into internal path. Followed guide of EMDK3.0 OS Upgrade to flash the zip from my application.

 

But I tried /storage/sdcard/TC55.zip and /internal/TC55.zip, it able to found the zip and shut down to proceed to boot loader, but in boot loader,

 

The tiny "ROBOT" icon will freeze and not proceed the flash of zip file. Any clue?