Still possible to upgrade AA core into a hardcore?

[ImogenB 3]

I have an UM3 that is over a year old, and has been happily printing.

However one printcore (AA) has a max temp sensor error message when loading into he printer, so cant be used.

I remember when the hardcore solex printcores came out, they offered upgrades of original AA cores, instead of a brand new core. Does anyone still do this? and would it fix my printcore problem?

[rebekah_harper 50]

Not sure what you mean exactly but 3d solex supply full cores and I think they do the nozzles separately too.

I have two of their cores and they work brilliantly.

one is at 0.15mm and the other is at 0.25mm

[ImogenB 3]

It was originally called a DIY upgrade, and you replaced parts yourself.. i think GR5 store used to stock them?