Updating wrong firmware on Himedia H8 Octacore

[John]

Recently I updated a wrong firmware version on Himedia H8 Octacore.  Actually this updated firmware was for "Himedia H8 Plus" whereas my media player was "Himedia H8 Octacore".  Due to the wrong firmware, my device is not working and no GUI.  The screen shows only HIMEDIA Logo and nothing works.  After that I tried a correct firmware version (1.1.2) many times but failed and error message displayed. 
Any suggestion to resolve this issue.

Thanks

[TimoMF]

Hello,

Had me with the player only the variant with a USB stick and turn on the restore button.

Firmware Upgrade by Recovery Mode (user data will be cleared)

1.Download a new firmware and place the firmware onto the ROOT directory of a USB drive.

2. Plug the USB drive into an empty USB HOST on the SMART TV BOX.

3.With the SMART TV BOX turned off,use a paper clip or pen point to press and hold the small pinhole restore button on the SMART TV BOX

4.While pressing the restore button,turn on the SMART TV BOX. Continue to hold the restore button for 5 more seconds,then release it.

5.The SMART TV BOX will begin upgrading the firmware from the USB drive.

6. Wait for the SMART TV BOX to complete the upgrade. Please be patient as it may take around 5 minutes to complete.

7. When finished, The SMART TV BOX will auto reboot.

Greeting Timo

[John]

Thanks TimoMF.  I tried with the Recovery Mode using USB stick and restore button, but no success.  The update progress bar shows about 20% progress and stops a while then quits by itself.  HIMEDIA logo appears on the TV and stays continuously.  No GUI from Remote Control.  Due to the wrong firmware, the device is not updating the right firmware.  How to remove/ erase the wrong firmware from my device? 

Thanks