Which of the following is used to identify compatible HMC and system firmware updates for a given system?

A.
Fix Level Recommendation Tool (FLRT)

B.
Entitled Software Support (ESS)

C.
Passport Advantage

D.
IBM Prerequisite Site

Explanation:
The Fix Level Recommendation Tool (FLRT) provides cross-product compatibility information and fix
recommendations for IBM products. Use FLRT to plan upgrades of key components or to verify the current
health of a system. Enter your current levels of firmware and software to receive a recommendation. When
planning upgrades, enter the levels of firmware or software you want to use, so you can verify levels and
compatibility across products before you upgrade.
https://www-304.ibm.com/support/customercare/flrt/