Can you kindly explain us why there is no firmware changelog available ?
Sharing the changes made to the firmware means giving users support and allowing them to decide whether to upgrade or not. It's not hard to understand.
Another question, why isn't there a section for the TBS2604? I am the owner of two TBS2603 and one TBS2604. I spent some money. Therefore i would expect a transparent and clear support that is crucial if you want that people continue to buy TBS products. It's the key of success.
Best Regards