Firmware 4 nec 4551a

which firmware is now the best for nec 4551a? thnx for information :rolleyes:

you should check this and decide from the experience of others using varius modded f/ws (latest are z2 and x3) and this for firmware downloads…

which firmware is the best for ND-4551A (crossflashed)?

It’s not allowed (AFAIK) to discuss that except in this one thread: