Rolling Back Firmware on 4612's

[SparkyDTMF]

Good Day Folks,

I've got a 4612 for which I downloaded and installed the latest firmware. I now need to roll it back to original, out of the box specs - and I cannot find the earliest firmware available on Avaya's website. Thoughts?

Thanks -

 

[EA6BMECH]

Hold 73738# This resets the phones, but I don't know to what extent.

 

[SparkyDTMF]

Thanks EA6BMECH, but I've tried this and it just resets the network settings on the device - it doesn't purge the flash memory on the phone.