JJos Uninstal Question.

I have a problem.

I use the JJ Free os, and I installed the 2xl to see if it's something for me.
i tried to uninstall the JJos2XL, but it wouldn't work.
I still see the tap tempo + power on message when i turn the MPC on.
How do i uninstall the full JJos2XL, so i will only have the Free JJos on my MPC
I also tried the turn on + window thingie, but that didn's work either.

The FAQ at viewtopic.php?f=25&t=79195 says

Q: How can I uninstall JJ OS 2?
A: "How to" not confirmed working yet. But basically, you've to install the AKAI OS again, then a JJ-OS 1 version. But the JJ-OS switcher screen remains, from what is known so far... update following.

I haven't tried myself, but that implies you install the Akai OS again, then install the free JJ OS

You really have to give XL some serious time to learn it all and get the muscle memory flowing.

How long did you try it out for?

The OS you wanna run needs to be the only OS on the flash card, then 1) HOLD WINDOW, 2)press POWER while still holding WINDOW and the boot screen will load, it will run its course and follow the prompt at the end that asks if this is the correct OS, I did it exactly like that 2 days ago.