Diagbox ECU Update Questions

[ragingraven]

Good evening, dear forum members!

I'm driving Citroen Picasso II 2017 (1.6 BlueHDi 120HP) VIN: VF7**************[VIN obfuscated, can be read by forum staff]
The car has been acting up lately (ABS error on 3600rpm, high consumption ~15l/100km, knocking in engine sometimes).

I was at my local official dealer here in Latvia (Andre Motors) and the guy there told me the car might need updates. When I asked how much it would cost, he said 75€/h , and that it might take up to 5 hours!
So I was thinking if it was possible to update the car myself? I read on the service.citroen.com that I need a PSA INTERFACE.
Where can I get one and how much does it cost? Is there a possibility to maybe rent this thing from somewhere?

My friend has a clone lexia cable, but I read that somewhere that it is not suited for the job, is that true?

Additional question: I have AdBlue disabled and Stage 1 tuning from previous owner, will the update turn these changes back to default or am I good?

Thanks to anyone who comments in advance!

[wheeler]

Additional question: I have AdBlue disabled and Stage 1 tuning from previous owner, will the update turn these changes back to default or am I good?

If you get an official ECU update I imagine it will wipe out any modifications you have done.
Shouldn't take any longer than an hour to do an ECU update.
I believe some people on here have successfully used the fake PSA interfaces to do update with the official software & online servers.

[ragingraven]

Alright, I suppose we'll see what happens after update.
About this Psa interface thing, is it this thing in picture?



If it is, where can I get one? I wrote to the e-mail shown in service.citroen page, but no answer so far.

[wheeler]

That is the new PSA diagnostic interface, from what i hear not even all the main dealers have it yet.
Not seen any counterfeit Chinese copy's for sale yet either.