Hi,
Is there any procedure to downgrade the controller of DeltaV from Version 11.3 to 10.3?
Thanks in Adv,
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Swamy Vadday
Remember you can't run S series controllers on v10.3.
http://community.emerson.com/process/emerson-exchange/operateandmanage/deltav/f/50/t/148
If you are using M series, then controller upgrade utility is the way to go. The utility will warn you that you are downgrading. Make sure you have all the latest 10.3 controller patches (or the patches that match your existing controllers if you need to stay consistent) on your pro plus or whatever station you use for the controller upgrade utility before performing the flash downgrade.