I had a similar problem when i wrote mSD image to NAND memory. WeTek support gave me this https://mega.co.nz/#fm/UYxBXaLK
there is a tutorial inside and you don't need to open the box and connect pins, just follow all other instructions.
still need to send commands via putty aswell yeah , just killed one of my wetek oops , just black screen regardless of what i do :(
UPDATE all i get in putty is error network refused conection any ideas
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Display Moretry this Honcho, http://linuxsat-support.com/attachment.php?attachmentid=33728&d=1431865882
* Power off your device and unplug the AC power cord.
* Download the recovery zip (below you will find the up to date version).
* Unzip the downloaded zip (you can delete the META-INF folder).
* Copy the downloaded zip and the freshly unzipped recovery.img to a MicroSD card.
* Now insert the MicroSD card in your STB.
* Plug the AC power cord while you keep pressed the little reset pinhole (located on the bottom of the device) for 10 seconds (just count slowly to ten and it will be good).
* The device should have booted to CWM recovery.
hAVE DONE ABOVE AND TO NO AVAIL , still dead :(