Migrating between Different OSs.

I have the JJOS128XL. I understand if I switch to any of the other OSs that Ill only be able to use half of the screen while in that OS.

So I remember owning OS1, but Im not sure about any of the other OSs. Is there a way of knowing what I purchased from JJ in the past? Obviously I purchased OS128XL. And because I own that and its what I believe to be the highest OS he has made, do I have access to any of the other OSs for free?

And considering Ive had more than one OS on this machine how do I move between them?

Hello,

Do you have a mpc1000 or a mpc2500?
This has an influence on dual boot and other stuff.
With the mpc1000 it's possible to buy OS individually while it's not with the mpc2500.

JJ128XL is specific to the big screen.
If you didn't purchase OS2XL in the past you will have to buy it.

For the mpc1K :

The screen of a save is not displayed if the password of OS2XL is not entered.
Functions other than a save can be used freely.
The screen of a save will be displayed if a password is entered.
Moreover, when the password of OS2XL is not entered, the file of OS is not displayed on a load mode.
Therefore, when you return to the free version, please turn on MPC, holding the TAP TEMPO button.
The price of a password is US$123.00.
However, the price is US$74.00 when OS2XL is installed in MPC into which the password of OS1 was entered.
Moreover, the price is US$15.00 when OS2XL is installed in MPC into which the password of OS2 was entered.
Payment is only a PayPal(credit card).

The best way to know is to load OS2XL and check if SAVE mode is locked or unlocked and the number of characters of the ID.

When Product ID is 7 characters, please click here
(The user who installed OS2XL in MPC into which the password of OS1 is entered)


When Product ID is 6 characters, please click here
(The user who installed OS2XL in MPC into which the password of OS2 is entered)

There is a discount system for OS2XL users when they want to upgrade to 128XL. I think it could be worth asking for a discount system for those who want to downgrade to OS2XL.