13 Replies Latest reply: Jul 13, 2014 7:21 PM by MacPcConsultant
MacPcConsultant Level 1 Level 1 (5 points)

Have a used MacBookPro from 2010 (2.66 GHz  i7, 8GB RAM) with many installed apps (such as CS5 Suite and Logic Pro X).  This laptop was upgraded to 10.9 prior to my purchase.    Some parts of Adobe CS5 and Logic programs are not working properly and/or updating properly.   Maintenance programs have been run and there are still problems.


I'd like to reduce/downgrade the OS to less than 10.9.    Will a "downgrade" from 10.9 to 10.7 or 10.8 be permitted and successful ?



Thank you.