Refer go my knowledge, just load it it up.
On my 861/800 I have done that many times.
If the system hang up, wait a minute and then try again.
In my case changinging the Baudrate to higher values up to 50k seems to help-but I know thats not logic...
Maybe you should try first to install 3.53 again and hear if something happened then?
800v3/218/271/8k.2/5k5s

/5kC/DSP3200/Reviver/
TT-ELP/Graham Slee Revelation/Trinnov Altitude 32/OPPO 205
__Ayon/HB/Shunyata/Miltzow -- power cables,
__Ayon/Jungson/Miltzow --analog, Miltzow-- digital,
__Vortex/WMA ,