I just got off the phone with TiVo support, there is a hidden downgrade option in the help menus Here are the instructions they just emailed me.
"To downgrade a DVR from TiVo Experience 4 to TiVo Experience 3:
From HOME, Choose MENU > HELP > RESET TO DEFAULTS > REPEAT GUIDED SETUP
Repeat Guided Setup screen where the customer will need to enter the backdoor code.
From the Repeat Guided Setup screen, enter the following Backdoor Code:
Press Thumbs Down, Thumbs Down, Rewind, Rewind on the remote control to display the Downgrade Your TiVo Box
screen.
Tip: If the backdoor code does not initiate the Downgrade Your TiVo Box screen, [Restart or Power cycle the DVR].
2. After entering the code, the Downgrade Your TiVo Box screen appears."
I am not responsible for any loss of data. As I understand this wipes all data & recordings...
Good Luck
Shalamar
"To downgrade a DVR from TiVo Experience 4 to TiVo Experience 3:
From HOME, Choose MENU > HELP > RESET TO DEFAULTS > REPEAT GUIDED SETUP
Repeat Guided Setup screen where the customer will need to enter the backdoor code.
From the Repeat Guided Setup screen, enter the following Backdoor Code:
Press Thumbs Down, Thumbs Down, Rewind, Rewind on the remote control to display the Downgrade Your TiVo Box
screen.
Tip: If the backdoor code does not initiate the Downgrade Your TiVo Box screen, [Restart or Power cycle the DVR].
2. After entering the code, the Downgrade Your TiVo Box screen appears."
I am not responsible for any loss of data. As I understand this wipes all data & recordings...
Good Luck
Shalamar