Jaguar / X-type - Security Failed error after battery discharge, adding the key

The problem is as follows:
In the X-type 2008 2.2 diesel / automat, the battery is flat. After replacement, the only original key you have causes the Security Failed error to appear on the display. The battery in the key works, closes and unlocks the car.
The immo control signals error 23 and from what I could read through the interface and SDD, error P1260 hangs permanently.
I have borrowed the VXDIAG NANO interface for jaga (so green) and a one day SDD version (139 & 148, offline) from the internet. Unfortunately, as long as the errors are read (and some old ones have been deleted, e.g. from DSC), there is practically no option in the service options, and there is no need to add / delete keys in the first place. It's empty there.
Someone could guide me how to embrace it, my car is private - I am not asking for profit.
On YouTube, the videos combine such SDDs with XF and some Land Rovers and there are service options in the style of key programming and various adaptations.

I feel something that the ECM driver will need to be reprogrammed, provided that it is not damaged.
Maybe it will help ...

I have already checked it, for comparison, connected to a colleague of the X-type from the same year, only a functional 2.0D and SDD behaves the same - i.e. no option to program anything except erasing errors. I think something needs to be modified in the computer - because the threshold does not cover something.
For me, apart from P1260, it also spits U2510, but in this working error U2510 also appears and does not bother anything (visible).
The loop for reading the immo around the ignition switch looks functional
I am also considering the help of a professional, knowledge costs money, but unfortunately you have to get to Łódź and run it - within reasonable price limits + advertising for my clients (workshop mainly varnish / sheet). Alternatively, I can remove some things and send them to programming.

According to In my humble experience, it is about a suitable memory batch, available only to services and very insiders. After what you write, I would immediately look for someone who is sitting in the Jaguar and has access to the batches. Here you have to give someone to reprogram the ECM and clocks. Of course, the service will cover, even by mail, but he will want to press a new driver ...

Check pw buddy.

Thanks to the support of my colleague Rafik $, the car was started in about 3 minutes, the cost was very reasonable with the commuting. Unprogrammed immobilizer and therefore the car rejected its org. the key - the battery was slowly discharging in the car (long stop) - unfortunately, these cars have it.
Repair "over the cable", nothing needs to be removed.