16:th-Jul-2016, 15:57:05
Reverting back can definitely be done, I had a member on another forum had issues with his upgraded 600, so I got him to revert back to 600 then re upgrade to 900, which worked with no issues.
As for tucpal said about downgrading to lower fw from higher fw this can also be done. V208 > v200. You just can't mix v181/200/208 system files. I have downgraded many times while testing downloaded themes, but now I tend to stick to v208 fw to avoid issues such as what you had with your map card.
Once you have reverted back to 600, let's say the new keeper wants to upgrade to 900 fw, they will only need to install using the USB and it will not fail at 80%, unless of course programming has failed due to error then the cd will be required.
Again all this is done at your own risk.
As for tucpal said about downgrading to lower fw from higher fw this can also be done. V208 > v200. You just can't mix v181/200/208 system files. I have downgraded many times while testing downloaded themes, but now I tend to stick to v208 fw to avoid issues such as what you had with your map card.
Once you have reverted back to 600, let's say the new keeper wants to upgrade to 900 fw, they will only need to install using the USB and it will not fail at 80%, unless of course programming has failed due to error then the cd will be required.
Again all this is done at your own risk.