JJ OS password

yeah I have jj os 1 4.98 but i would like to uprade to jj os 2xl if i install os 2xl will i lose os 1 and do i still need the password for os 1 if i want to reinstall it was awhile ago and i lost it

The Password for OS 1 is still saved in the MPC, in case you want to re-install it.
And if you once installed the OS2 you don't need to enter the os2-pw again, even if you install os1 and then swich back to os2.

If you go to os2xl/os2, you can load into os1 by holding down the tap tempo button while power on without needing your password.

You can install os2/os2xl interchangeably without having to retype your password.