Look in this folder \var\www\partials. There you will find the miner.html file.
This is where sgminer gets its names from on which algorithms to mine.
Obviously sgminer needs to have the matching name already programmed in it for it to connect to the pools.
I've tried it several times. But I did not do it anywhere. It must either be in sgminer or rather in FW STM.
What was it that you tried? To add the algorithms to the drop down list?
Yes exactly. Also change the algorithm and pool data in \opt\scripta\etc
files miner.conf and miner.pools.json
And Miner ran to default algo: Quarkcoin
The only place I was able to find the list of Algorithms was in the miner.html page. I added all other possible algorithms supported on sgminer as of version 5.6.1. When I did that I was able to connect to some pools of those algorithms. Some others I could not. The ones that did connect to the pools, the devices kept defaulting to the Blakecoin algorithm, which I believe is the default for GB.