I think that the difference is that Veriexec is disabled on one bundle ( the tgz (597.16MB)
Checksums) , which enables you to run unsigned programs, such as programs that you develop with Python, Chef, and Puppet. The Junos Automation Enhancements include the following features:
-The factory default configuration is a Layer 3 configuration. (The standard default factory configuration on some device series is Layer 2.)
-Safeguards ensure that you cannot overwrite essential Junos OS files, including system log notifications.
-The installation automatically sets up and reserves a 1 GB user partition on your system. You can use this partition to store your binaries and additional packages.
-The user partition is not overwritten when you upgrade or downgrade the software to a OS image that does not contain the automation enhancements.
If this solves your problem, please mark this post as "Accepted Solution" so we can help others too \:)/
JNCIE-ENT#863, 3X JNCIP-[SP-ENT-DC], 4X JNCIA [cloud-DevOps-Junos-Design], Champions Ingenius, SSYB