SamyGO

Possible mistakes/errors:

1. Don`t use windows text editor (Notepad winword etc.) to edit script file. Use N++ instead.
If You are linux user here shouldn`t be any problem.

2. Copy game to TV memory and run Run this telnet ennabler instead another one (there are two "games"). Leave usb attached and go via Menu-Sources-Content Library-My Content(not USB!)-Children and run it from there, not via RC content button.

3. IP of TV must be setted manually, not automaticaly. Do You have ping from TV.

I attached file. Extract telnet.sh. Don`t edit it. Just replace with original one. It should work.
Fully automated method is based on Samygo Troja Horse. If it not work for any reason, this method will don`t work too. Try to use telnet-enabler as described in this topic.
As telnet client You can use SamyConsolefrom geo650. You need just keyboard attached to TV before You start this "Game" on TV. Off-course, You need UDN game with key from nurisam.com in this case too and working telnet.

I have little changed Samygo Trojan Horse. Now there are three possibilities, just two first are working:

• Activate Alternative firmware menu (no comments. This game does NOT enable telnet )
• Run Telnet Enabler (run it and enable telnet)
• Samygo Trojan Horse (Does nothing, don`t run it)

How to use:

• Enter Service Menu ( quickly push
  [MENU] [MUTE] [POWER] on your remote control )
  [*] Change setting (Control -> Sub Option -> Wiselink Write -> On )
  [*] Download attached file:

  telnet-enabler.tar.gz

  [*]Unpack and copy telnet-enabler folder to root USB and plug in to TV.
  [*] Enter Content Library Manager -> Select USB -> Select Children category.
  [*] Use Copy function on TV to copy Telnet Enabler as Trojan content to TV internal flash.
  [*] Return back to main manu in Content Library Manager and select again Children but from TV flash contents this time.
  
  [*]You can run it from: [Menu] -> [Source list] -> [USB] -> [Content Library] -> [My Contents] -> [Children]
  (this way USB must be attached even if You run it from TV memory, otherwise You don`t find USB in [Source list] )
  
  [*] Run Activate Alternative firmware menu
  [*]Wait while script makes a job, don`t power-off TV. There isn`t any message to inform You about it`s done.

(on LE40B653T5WXBT it took 50 sec). After approx. 2 minutes check Firmware upgrade menu, if there is Alternative Firmware active, choose it, TV reboots with new older firmware.

thanx moras86 for images

p.s. Info added to Wiki

juuso this will also work on my LE40B652? Sorry for stupid question, but I just wanna be sure

EDIT: Hell yea, I successfully managed to revert back to 2006.0 firmware