is there anyone that has the original firmwares of the L3+ downloaded? I want to have all the firmwares that still enable ssh. Anyone? Thanks.

You can try this one https://support.bitmain.com/hc/en-us/articles/115000216034-L3-L3-and-L3-Control-Board-Program-Recovery
You can also use this if you accidentally flash it with the latest firmware which is SSH disabled.

Also check this link https://service.bitmain.com/support/download?product=AntMiner%20L3%2B
You can find the firmware there with 2018 it is ssh enabled don't flash it with 2019 firmware which is SSH disabled.