The latest PSP firmware update (6.20) added the Digital Comics Reader to the PSP XMB.  The Playstation Network comic service will be coming to the United States in December.

To promote the new service SONY is offering a free issue of Star Trek: Year Four – The Enterprise Experiment from their partners at IDW Publishing. Once you download the free Digital Reader, visit PlayStation Store on the PSP and enter the following promotion code:

724K-A4BG-JLD7

This code is valid until December 16, 2009 and must be redeemed directly on the PSP (not through PS3 or Media Go).

You should also check out www.playstationcomics.com for more information. For those of you interested in another free issue check out PlayStation’s Twitter account and you’ll find another redeemable code there.