I received my en16 but it seems I cant enter bootloader

Hey guys, thomann finally send me the EN16, even though I ordered new, it seems they taken it upon themselves to send me a model someone returned so I can have it faster. I dont mind that but…

When I connect it like normally it works as it suppose to be, but it says firmware missmatch, so when I try to enter bootloader it just doesnt seem to work properly, I press the side button, wait for leds to become green and then release it. After a while my computer says something along “device malfunctioned” I noticed its trying to show a new disk on my pc window but it doesnt show below it a storage bar like with every other disk and after a while its going away.

I tried various usb ports in my computer with no success. I am on windows 11.

pls help

Just to be clear, you have the EN16 unplugged, you then hold the page/side button, and plug it in while holding it, then see it flash red briefly then green?

Precisely, and when it turns green (after a very brief red) I release it. I also tried on another PC with no success