SamyGO

You forgot to check, you followed B series instructions

# 1.1 T-CHL5DSEUC, T-CHL5DEUC and T-CHU7DEUC
# 1.2 T-CHL5DSEUC and T-CHL5DEUC Specific
# 1.3 T-CHU7DEUC Specific

Here isn`t any C or D series firmware mentioned...

But i think we should add somewhere on the top "Only for B series"...

For all above devices... and the example is with B series firmware. I apologize if our wiki page confused you and you got TV bricked...

You should root your tv over hotel mode and run any script you want which loads your required drivers. Or samygo all extensions as well...