Image Purposes
Signature Updates - used to update the signature level on the IPS
ex. IPS-sig-S392-req-E3.pkg
Recovery images - used to upgrade the recovery partition
ex. IPS-K9-r-1.1-a-5.0-1.pkg
System software - used to re-image the application partition
ex. IPS-4240-K9-sys-1.1-a-5.0-1.img
System software upgrade - used to upgrade the application partition
ex. IPS-K9-maj-5.0-1e-S149.rpm.pkg
System software patches - used to patch the application partition
ex. IPS-K9-patch-6.0-5p1-E3.pkg
System software ISOs - used to re-image the entire device (only applicable for those older IDS's with CD-ROM drives)
ex. IPS-K9-cd-1.1-a-6.0-1-E1.iso
Notes:
E3 means Engine Update 3r means recovery partitiona means application partitionreq means requiresmaj means major updatecd means that you can create a cd from this ISOp1/patch means patch 1sys means system softwareS# means signature level #e means an update to that version. (ie. 5.0-1e is the next iteration of 5.0-1. There was a 5.0-1a, 5.0-1b, etc)