Multi channel recording

XC60

Newbie
Newby so please bear with me.
Recently got rid of basic Q box but liked the multi recording features. At present I also have an H2S.
I have a hybrid LNB and need to swap cables over.
If I bought another Zgemma would the remotes conflict or would they be different frequencies.
Also could I restore the H2s to a pre 2017 era with new sotware loaded? Learnt from this site about flashing boxes.
Thanks in advance
 
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