I’m new enough to mining and I’ve looked everywhere to try and figure this out but I think at this stage I need to ask here as someone will know. Here is what I’ve gleaned so far if someone could confirm.

1. Balanced mining used to be possible on older firmware. (Cgminer)
2. BMminer replaced Cgminer on newly shipped (2017 onwards) S9’s.
3. Cgminer was required for Balanced Mining.
4. Putty was required into Cgminer to do the load balancing.
5. The latest firmware prevents you from downgrading to Cgminer.
6. Nobody has found a solution to this as of yet.

I’ve looked at these two threads below but they’ve gone dead, I assume because of point 2 above.
https://bitcointalk.org/index.php?topic=395721.0
https://bitcointalk.org/index.php?topic=623672

I really would like to point 90% of my power to Slush pool to mine BTC and 10% to somewhere like Multipool to mine BCH, DGB or other altcoins.
If anyone can confirm the above and let me know if there is a solution I’d really appreciate it.

Thanks