Radio code Peugeot EON

[VespaDirk]

Hi all, I have a Pioneer Car Radio in my Peugeot Eon and after changing the fuse and light bulb for the cabin overhead light - I got a message on the radio display asking me for a code. As the car was second hand and the previous owner had no idea what the code was or where I could find it, I tried 1234 and 0000 (which often are the pre-sets). After this didn't work and I only had one try left before the radio locked fully, I found out that there is a code on a sticker in the back of the user-manual (last 4 digits). -Well, trying this code didn't work either and now the radio is locked.
Seems like whatever I try to press, the radio doesn't budge from the "Code Locked" display.

Any advice? The serial number is:
KBTM003975EW
and it's a Pioneer Radio installed in a Peugeot EON

[forumowisko]