What software version and feature set are you running? The 1720 runs the IOS from memory therefore it needs to load the complete image into memory (after it is decompressed). If the router does not have enough memory to load the de-compressed image into main memory then decompressing it before saving it on the flash isn't going to help. If 16mb's is not enough for the version and feature set you are using then try to find a version/feature set that will work with 16mb (12.0 ip plus for example).
Introduction This article will help you understand the steps on how to
download the UCS licenses from the Cisco Systems website and then
installing it on the UCS. The redacted (blue lines) just covers up
certain numbers for privacy please do not take them...
Introduction This article will help you understand and educate the
customer on how to clear their "expired licenses"
(license-graceperiod-expired) from their UCS-M. If a customer just
purchased a license and needs a step by step guide on how to download
==================== VIC FNIC driver does not support Virtual Volumes (
second level LUN ID ) An enhancement request has been created to track
this feature - CSCux64473 UPDATE - 12-14-2016 We made some traction on
the enhancement request - The Fix is in t...