Re: Is HDX Firmware Backwards Compatible?
I think it is backwards compatible. Sometime ago a producer came to my studio and wanted to run PT 10. I was running PT 11 on a different Mac OS. I just plugged his hard drive, booted and it worked.
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Hackintosh, 3,7 GHz 10-Core Intel i9, 64 GB 3200 MHz DDR4, OSX Catalina 10.15.7, PT HDX 2023.9.0, SSL 4040G+, tons of outboard 
Mac Book M1 Pro, 16GB RAM, OSX 23.6, PT Studio 2023.9.0
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