Originally Posted by arcanekn
does the v5 read the same file types as the v3?
Yes. On the V3, older firmware reads DRMed (encrypted) MOBI but the latest firmware reads DRM-free MOBI and DRMed Adobe PDF and ePub. The V5 firmware reads exactly the same formats as the latest V3 firmware (e.g. DRM-free MOBI, etcetera).