Head unit, Glove Box Light, Map Light -New Owner Questions

Hello people,

I got a 2011, VRS a few days ago. Primarily for a long trip. Seems decent so far, but I want to add power, music and just get things working. I have a few issues/questions. Hoping these are common and easy for experienced here, I have been trawling forum, maybe I have missed some stuff.

1. The head unit did not display. The touch screen worked but there was no display. I tried removing fuse. No luck. (Bolero, Delphi)

   I purchased a head unit from breaker (Bolero, blaupunkt), assuming I could easily generate a code. However none of the normal sites work and say they cannot generate a code. Some say 'a Skoda serial was detected but it is 10 digits longer than expected' (definitely isn't)

   I could cut my losses and get an aftermarket unit, but tbh I like things to be stock. Any advice appreciated

2. The glove box light is always on when the doors are unlocked. I can't see where the switch is for detecting glove box closure, if I push it hard it turns off, but on when I remove pressure. The light switch seems missing (just a round area with an off centre hole) - anyone know where the switch is, and whether I can replace the actual manual switch?

3. The cabin/map lights blink/flash. They seem to be LED? I removed the fuse and cleaned it a bit and they flash less(will replace fuse and see what that does) anyone had this before?

4. There is something in the glove box, like a old iPhone charger, it is Skoda branded, is this the ODB reader? Not seen this format before.

It looks like the previous owner had a reverse camera and usb power attached to a different head unit but remove it and chopped wires before sale. If I do go aftermarket any recommendations that keep good features (Aircon display? Reverse. Sensor display etc) let me know.

I plan to add some usb units via fuse spur. Any key points or quirks for this particular vehicle appreciated.

Thanks!