Can you downgrade a ERS4850 on version 6.1 to 4.2.3 ?

[Siobhan_Stynes]

We have an RMA switch that has arrived with 6.1 and we need to downgrade to install in stack of VSP4850 ERS4850's with 4.2.3 software. Can you downgrade this switch ? Or do we need to downgrade - will the V6.1 switch integrate in the 4.2.3 stack ?

EDIT: Corrected switch model

[Siobhan_Stynes]

Stupid ofme, I meant to say ERS4850 ! Does the same apply ?

[Drew_C]

I updated the post and title for you 🙂

[Matthew_Palmer]

Hi Siobhan,

VSP4850 is not a stackable switch - so I presume you mean clustered with another switch.
The answer is yes you can downgrade it 100%, but as I recall you might have to downgrade to release 5.0 first because I think it will fail if you try directly (will not hurt the switch - so try - but go to 5.0 first if it does not take it).

I would note through that there have been many fixes since 4.2.3 - and also 4.2.3 is out of support, so you might be better thinking about upgrading the others instead....

Many Thanks,
Matt