The latest Rocky5 softmod installer lets you null the EEPROM (set it to all zeroes), so in case the original HDD dies it's easy enough to build a new one. It's a one-minute process and you can do it straight from the menu without messing around with the hardware at all. Still not as nice as flashing the TSOP (which lets you disable the HDD lock entirely), but the best you can do on a 1.6.
I also got a 1.6 recently (side of the road find 😜 ) that I've been messing around with. I already had a 1.4 that I modded a few years ago, but the tools have improved and made a ton of functionality easier, so I've been using this one as sort of a test bed to mess around with. Definitely go with Rocky5 as it's the most full-featured and up to date softmod available.
Tons of good homebrew on these! Naturally I've also got Quake 1 & 2, Doom, Heretic, Descent, Freefall 3050AD, etc. installed. 😉
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