Forum to discuss all matters relating to the MPC1000 and MPC2500 operating systems created by 'JJ' (all versions).
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By Chulukinat Sun Oct 31, 2021 11:22 pm
I know some years ago it was possible to crossgrade from JJOS 2 to JJOS2XL for 15 bucks. Now I don't see this possibility anywhere and also no way to contact JJ about it.

I really hope I don't have to pay the full price of the 2XL when I already bought JJOS 1 and 2.

Anyone has more info about this?
By Jawbrizza Sat Nov 20, 2021 9:00 pm
I emailed asking this a couple weeks ago

What is the price to upgrade an mpc2500
running jjos 2 v1.22 to ios2xl?

The email back I got said this

“ For MPC2500, if the OS2 password has been
entered, the OS-XL password is not
required.
It can upgrade to OS-XL, without needing a
password
The screen which asks for the password of
OS-XL is not displayed.
The password of OS2 is not entered into
your MPC when the screen which asks for a
password is displaved.
Therefore, it is necessary to purchase the
password of OS-XL for $123.00 in this case.
Thank vou.”

Hope this helps