MX 800 - Downgrade software version

Hello,
Is it possible to downgrade the software version of the MX 800 to TC.6.3.
For information, the MX 800 is by default TC 7.1.2.
Please help.
Thx

If you go to the MX800 software download page, the listed software versions are the only versions that can be installed on that particular device.  As Jonathan noted, each codec or series of codecs have a specific TC software file number, meaning you can only install the software that matches the file number relevant to the codec you're installing it on.  It's confusing I know, but it's because as codecs evolve, such as OSD interfaces or features change, and not all features will work on all codecs, they need some way to change and/or limit these items across the different platforms.
As Jonathan had suggested, if you want or need to register in H323, you'll have to not us SIP, as the MX800 is single stack only, meaning it can only register using one protocol, not both.

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