So when you put the rescue sd card in the tablet and hold down the two buttons to enter the recovery, it doesn't do anything at all? No screen flash even, just totally black? On another note, with the AML software method, when it freaks out and disconnects you, have you tried not stopping the software and just quickly unplugging the usb cord from the computer usb port and then plugging it back in? Also, did you try the "reset hub" option somewhere in the file menu?
I have a similar issue with a Karbonn Smart Tab 10 (version 1). Funny thing is - after the 'bootm 0x82000000' command is executed, the device is instantly de-recognized as a World Cup device and registered as Linux File-Stor Gadget USB Device. Interestingly - in this mode, the ImageBurn tool is completely unable to even recognize the device attached to the USB port.
When I restart the device, it goes back to being recognized as a winlib32 device and is detected by the AML Image Burn tool.
I checked the log - while failing it shows - 'no device is connected'.. this is because the ST10 by then is detected only as a Linux File Stor Gadget USB device. In the command line it tried to poll all this time with this - path : ""
i. I am not sure if the tool is unable to proceed due to a path error, or
ii. The uboot_orig.bin file is inappropriate (I actually downloaded the stock firmware and extracted uboot from there itself and renamed it as mentioned in your signature thread that actually brought me here)
Will try with AML Flash.zip (it can't get worse anyway, it's a hard brick anyway), just to see where it gets stuck.
And yes - I also ran one flash where I deleted the bootm command from the config xml file. It showed completed successfully, but then obviously nothing happened...the command bootm followed by the address(I guess) is a vital part of the flashing process.
I will let you know with the logs and the screenshots when possible.