Generally, if the speakers are 24/96 they can be flash firmware upgraded. Only the 18bit models required EPROM chips.

I've had a number of DSP5k's with v4 firmware and have successfully upgraded them to 5.xx

If they've not been re-capped, there is definite mileage in doing them - as many others will vouch - it is THE most cost-effective upgrade you can make to your DSP's!

If you need any help/assistance, please PM me.

Cheers,

Steve

Main: 861v6 (LPS), 808v6, UHD722, DSP8000SE Anniversaries, DSP5200.2HC, DSP7200.2, SW1600, Sky Q, Cambridge Audio BD, Roon, M80
Office: 861v4 (LPS), 818v3, 800v4, HD621, M&K S150P, DSP5500HC, M&K MPS2810 sub x2
Son's system: 861v4, HD621, DSP6000.2, DSP5200HC, DSP33
Spare: MCD, 100 Series, 200 Series, 500 Series, F80s, C15s.