Premiere GSOD Reboot Loop

I have a TiVo Premiere XL (TCD748000) with an original 1 TB (WD10EVVS) drive that I think is failing. The symptoms are: recordings freeze/pixelate, no guide information, cannot rewind live TV. I used ddrescue to recover the drive to a new 1TB drive (WD10EZEX). The ddrescue process completed successfully and indicated 35 errors. Unfortunately, when I loaded the new drive into the TiVo, I experienced the same issues as I saw with the old drive. I tried a KS 57, and now am in a perpetual GSOD reboot loop.



2 questions:

1. Does anyone have experience with this that can offer options to get me back to a functional TiVo?

2. Can someone provide a clean OS for the TCD748000 in the even that I have to go that route?



Thank you!