In Broadcom portal we see the oldest version for a Aria for Operations Logs 8.6.x.
The requested version .pak file are no longer available in Broadcom portal to download.
Aria operations for Logs
vRealize Log Insight
GS is not able to provide binaries for out of support releases. If the you are unable to download binaries from the Broadcom Support Portal, then you will need to redeploy on a supported version.
There is no longer an option to go upgrade from below the version VRLI 8.6.2.