TiVo Community Forum banner
1 - 2 of 2 Posts

·
Registered
Joined
·
16,595 Posts
In some database(s) at TiVo, Inc., Product Lifetime Service is tied to a particular TiVo's unique TiVo Service Number.

On a TiVo's System Info page you'll see where it says

TiVo Service Account Status:

and to the right of that a lifetimed unit will say

5: Product Lifetime Service

and a by-the-month subscription will say

3: Account in Good Standing.

On the next line both will have

TiVo Service Level:

and to the right of that something like

C:030219

In this particular case that number means March 2nd, 2019, but a week or so before that the monthly sub fee will have been paid and it'll change to 04something19.

Something similar will happen with a lifetimed unit without any more money having to be paid, but still the "paid up for another month" status has to be updated each month.

When a TiVo "phones home" to the TiVo servers, it transmits its TiVo Service Number to the them and they look it up in their database(s) and inform the TiVo of its current status.

So you have to have the combination of the TSN and TiVo, Inc. telling the unit reporting that TSN what its current status is.

On the Series 1 and Series 2 models there was an integrated circuit (surface mount device, not through hole) made by Atmel and informally referred to as the crypto chip, and it was in that chip that the TSN is permanently stored.

The recordings a TiVo makes are also tied to that TSN, which is why you can't just move a hard drive from one TiVo to another without losing those recordings.

I rescued some recordings several years back by moving the crypto chip from one Series 2 TCD649080 motherboard to another of the same model.

The first of the Series 3 models, the 648, also had a separate crypto chip, and I've so far unsuccessfully tried to rescue some recordings via a chip swap from one 648 motherboard to another one.

I haven't given up hope of succeeding, I've just been snowed under with everything else under the sun (or lack of sun here in hurricane country).

The other two Series 3 models, the 652 and 658, incorporated the crypto chip into the main CPU, which isn't like an off-the-shelf Pentium but is custom made for that model of TiVo. It's not standard SMD, where you and a magnifying glass and small tip soldering iron can see and get to the tiny little "legs", it's a Ball Grid Array, and swapping them in and out is another level of complexity altogether, although I think some people with hot air re-work stations have done it, though I don't remember if they were successful in actually getting the chip to work on the new motherboard.

So anyway, if you have experience with hot air reworking and the necessary equipment, you could start by moving the CPU from one of those non-subbed Premieres to the other one and seeing if it'll at least boot, and then go from there.

Let us know how it goes if you do.
 

·
Registered
Joined
·
16,595 Posts
And be careful to keep track of which chip has which TSN, and if you get a working unit, put it in the case with the TSN (on sticker on back) that matches the CPU's TSN.
 
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top