Flashing from a Windows Computer using RK Batch Tool

You need perform these steps (click 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: v4.5 (v4.7 and v4.8 did not work for me, nor did v4.91 - although these versions appear to install correctly they did not allow me to flash my Hudls)
2. Extract and run the assistant DriverInstall.exe, click 'install' button to install the drivers, accepting the dialogs as needed. If you have installed any other version, then click the 'uninstall' button first to remove the other version.

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, accepting the warnings, 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

Step 2: Install the RockChip Batch Tool program

1. Download the RockChip Driver Assistant from https://androidmtk.com/download-rockchip-batch-tool Working version: v1.8 (latest at the time of writing)
2. Extract the files from the download and run the RkBatchTool.exe program

Step 3: Download and unpack the TMF Custom ROM Firmware

Download the latest TMF Custom ROM from the Releases page of this repository. Extract the .img file from the download.

Step 4: Connect your Hudl to the computer in flash mode

1. 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 few 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).

2. If you have installed the drivers correctly and got the Hudl into bootloader/flash mode then you will see a 'Rockusb Device' under the 'Class for rockusb devices' heading.

If you see a dialog [TBD Details] when connecting your device then you are not in flash mode or need to run the registy thing from above and try again.

Step 5: Flash the TMF Custom ROM firmware

1. Load the `*.img' file into RK Batch Tool
2. Check fro firmware completed loading and green light for connected device.
3. Click 'Restore'
4. Wait for flash to complete, device should be rebooted automatically, clear /data and /cache from recover and then reboot to a working tablet.

Step 7: Perform the post install steps

1. Step through he last of the Tesco branding.
2. Set up Wifi
3. Check location settings
4. Allow play store to update
5. Update play services
6. update other apps