Patch Builder V1.3.3 [top] -
Modify the eboot.bin using tools like UnfSelf and py-patcher .
Note: The ISO test was 5% slower due to the new CRC64 verification, but the resulting patch is more reliable. patch builder v1.3.3
2026-04-11 Build: Stable Type: Minor Feature & Optimization Update Modify the eboot
Before diving into version 1.3.3 specifically, it is worth understanding the core utility. Patch Builder is a desktop application designed to generate small, efficient patch files (often called "xdelta" or "binary diff" files) between two versions of a large file or an entire directory structure. patch builder v1.3.3
Apply with:
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCve43726/?referring_site=bugquickviewredir
I found this bug from Cisco. Also, change to network type.
Hi,
I’m trying to do this with a newer version – csr1000v-universalk9.16.03.06
Do you know what should be the SHA1 for this ? or on which file can I find it ?
I can’t find it
thanks…
Update :
Hi,
I also tried to download the exact version you used here, and changed the SHA1, and it didn’t worked too…
I’m getting an error again : “the checksum not match”
any clue what am I doing wrong ?
Very good article and troubleshooting. Additionally please do change “virtio lsilogic” to “lsilogic” for the SCSI Controller to make it work.
Also mentioned by Stephen in the first comment but realized it after struggling, finding the issue and fixing a few hours later!