From z/OS V2.5 support is provided with:

Product    Delivered in      MFA Job Log Message  
 ED V8      ED 8.0.00      MFM0014I: Mainframe Access V10.00  (08000000) for ED80
 ED V7      ED 7.0.04      MFM0014I: Mainframe Access   V9.04  (07000004) for ED70
 ED V6      ED 6.0.16      MFM0014I: Mainframe Access   V8.16  (06000016) for ED60 
 ED V5      ED 5.0.23      MFM0014I: Mainframe Access   V7.23  (05000023) for ED50

For MFA V6 and older, open an Incident Ticket, provide detailed information. Also need the output of the whole AMASPZAP job (in ASCII, with line-feeds) of modules MFMFM and XDBXSMV0. A zap might be able to be created or you might need to upgrade MFA.

Versions of Enterprise Developer that are currently running successfully with a version of MFA will continue to run once MFA is upgraded to at least the patch update level listed above.