duo cfe v3.0

HowTo updating bootloader:

download attached file
unzip attached file
format USB flash drive in with fat
create directory /vuplus/duo at flash drive
copy file to directoy /vuplus/duo at flash drive
shutdown VU+ STB
disconnect all USB devices
connect USB flash drive to VU+ STB
power on VU+ STB
wait for message "Please remove USB" at VFD
disconnect USB flash drive
power off VU+ STB
flash new image

THX an @plnick