Flashing from a Windows Computer using RK Batch Tool

You need perform these steps (click on the '' to expand each step in turn:

Step 1: Install the RockChip USB Device Drivers

1. Download the RockChip Driver Assistant from https://androidmtk.com/download-rockchip-driver-assistant Working version: v4.4 (v4.8 did not work for me)

Test with lastest from RockChip Direct: https://github.com/rockchip-linux/tools/raw/master/windows/DriverAssitant_v4.91.zip

2. Extract and run the assistant, click 'install' button to install the drivers, accepting the dialogs as needed
3. For Windows 8.1 and higher you need to add a registry key to cater for the RockChip bootloader in the Hudl advertising itself as USB v2.1 compatible, but not following the spec correctly. copy this text into a file with a .reg extension and double click it to apply the change to the registry:

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\2207300B0100]
"SkipBOSDescriptorQuery"=hex:01,00,00,00

4. Connect your Hudl to your computer using a USB Cable and put it into bootloader/flashing mode: Option A: With the device powered off and not connected to the computer, press and hold the volume+ button and keep holding it while connecting the USB cable to the computer. Hold for another 5-10 seconds. Option B with the device in any state and connected to the computer by USB then hold the volume+ button and press the reset button through the small hole on the back of the case (with a SIM removal tool or paperclip).
5. If you are connected then you will see .... in device manager

Step 2: Install the RockChip Batch Tool program

Step 3: Install the RockChip Batch Tool program

Step 4: Download and unpack the TMF Custom ROM Firmware

Step 5: Connect your Hudl to the computer in flash mode

Step 6: Flash the TMF Custom ROM firmware

Step 7: Perform the post install steps