[black_mamba]

From what I understand, you only have to run the PPST once. It will upgrade your PRI to 2.03_003. Supposedly the best way to do it is by using the leaked ROM: install leaked ROM -> let customizations run -> soft reset -> check PRI -> re-run ppst.exe if not updated -> then flash whatever other ROM you want. The ppst.exe mainly updates your PRI, not sure if it does anything else.