Deal all, I am working with a GE MARK VIe (IS420UCSBH3A) TMR (R, S, T) system. The software (ToolboxST) version is V07.04.
I am planning to replace all three controllers (R, S, T) from the IS420UCSBH3A model to the IS420UCSBH4A model. I checked the GE manual and found the phrase: 'For Simplex configurations, only one platform displays and controller interoperability is not available.' I understand that the IS420UCSBH3A is a Simplex platform, and the IS420UCSBH4A is structured for R, S, T (TMR) platforms.
My questions are:

1. Should I not replace the controllers one by one? Do I need to prepare three USB drives (for backup) and replace all three R, S, T controllers simultaneously? (The current manual only mentions interoperable controller replacements, not replacements involving different platforms.)
2. After replacing the R, S, and T units, do I just change the Platform type in ToolboxST and download the configuration?
3. Are there any additional necessary tasks?"

 

what is the current status ?
If you have their latest version of runtime, then it might be interoperable.
Do check with them before proceeding.
You dont need 3 USBs. good working 1 is enough. You can reinitalize the same USB again and again for the next sets.