Bad HV Battery, Recently Replaced 12V, Now, not even starting...

Oh, I now understand. The B2799 is for the immobilizer.. thanks for the heads up on that.
On the HV, yea, its certain, I need a new one but had been searching around trying to see where I could get the best deal on a new HV battery.
(wouldn't want to go for a reman. or repaired/salvaged battery option as it would be a big deal having to ship back to the US for repairs should it develop a problem soon. So, I could simply spend the extra cost now and get a new one- unless, maybe someone out here could provide a better /alternate way of approaching this.

 

Grumpy, I honestly wouldn't know how long it stayed at all these places
However, from the papers, I think it was close to a year from the time it left the US (to the dealership-waiting to be sold) and when we got to buy it. Hmm.. I wish we had a foresight of these these.
On jump starting, from the day it finally stopped starting, it has actually not been started again. As I did mention in the first post, when it started showing these fault lights and codes, we took it to a toyota shop where the initial codes were pulled and I was told 'twas all because of a failing battery so we had to first of all replace the 12v battery. However, about 3-4 days after leaving that workshop, the car finally failed to start any more. And though the 12v arrived and got replaced, it still has not made it to start. Hope that clarifies...