Originally Posted by Juggs64
So a RAM upgrade possible or not?
The Series 1 TiVos had a place on the motherboard where you could solder two more RAM chips if you had SMD experience, but I don't recall seeing any extra places on S2 and S3 mobos, so I'm guessing there aren't any on S4 boards either.
That would mean having to unsolder what's there and replace it with something exactly the same but with more capacity, and then you have the problem of whether the TiVo will recognize and work with the extra bytes assuming that the chips are electronically compatible with the motherboard.
I assume you already know what SMD stands for and have experience and equipment to handle SMD chips.
If not, this is not the appliance on which to learn.
And for anyone contemplating a CPU upgrade in a TiVo, it's a custom chip with extra stuff that was outboard on the older models until the S3 HD and HD XL, including the part that holds the TiVo Service Number unique to that individual motherboard, and to which your subscription and recordings are tied, and it's a BGA mount, compared to which SMD is a piece of cake.
I won't say a RAM upgrade is absolutely impossible (because TiVo doesn't let enough information out for anybody to determine that in advance), just hideously impractical at best.