Sound problems after radio retrofit (from MIB2 entry to MIB2)

[klocec]

So,
I had the MIB2 Entry (5f0035887) unit, and I decided to change it for a full MIB2 5QA035858. I've ordered the cables from China, and taken the component protection off, and everything works well, besides the speakers.
In my car, there are 4 speakers in the doors, and 2 in the front pillars (tweeters, I think?), and out of them, only one speaker on the drivers seat, and those 2 tweeters are playing, no matter the sound settings.
I've tried changing the speaker settings via VCDS (bytes 4 and 11 in the long coding), but it makes no difference.
Do I have to change the wiring to account for the new head unit, or am I just doing the coding wrong?
Any help would be greatly appreciated <3

 

[klocec]

Also, the car is a Seat Ibiza 2016 (6p) if that matters

 

[East Yorkshire Retrofits]

Unit requires correct parameterisation and coding

 

[klocec]

Unit requires correct parameterisation and coding

I've read about that, and I don't really see how would that solve the issue. I have 4 pins in my audio plug, so 2 channels, and according to the diagrams, it should correspond to the 2 front channels on the quadlock connector

Unit requires correct parameterisation and coding

I thought that too, but it wouldn't make any sense to me, from my knowledge, those radios

 

[klocec]

Update: Turned out it's just a blown speaker, it decided to blow up at the exact time I changed the radio