How to update PRL after root and disabling OTA updates

[aintitfun]

I am curious as to if the disabling the OTA's, which I did. Also means that I will NOT be able to do PRL updates through Settings>about phone>system update> PRL update, I would have to assume it does. I am very new to this and am running RegawMOD v2.1t rom. I believe my current PRL of 60668 is actually up to date for now, but I am concerned I will not be able to update in the future when I try to update it using the method above, I get a 1012 error. I have done some research on updating it manually through ##775# but nothing even pulls up when I type that into my dialer, also I was unsuccessful at getting sprint to give me my MSL #.