I have noticed a lot of negative comments towards Gigabyte even with the latest boards that they only ever seem to update anything when they are forced too and support have started making excuses that they no longer have the tools for boards older than a couple of years.
Gigabyte are ok in my book, UK support and they rolled out some updates pretty quickly, as best can be expected after the Spectre /meltdown scare.
Their support has been good too, when I've contacted them directly.
Disagree on the Asus front. Despite Intel releasing fixes for the vulnerabilities to the manufacturers there are no updates for the Haswell platform from Asus and Gigabyte and I doubt that they will ever release one. They both abandoned the platform years ago.
Isn't your board still under warranty? I've seen reports of other high-end in-warranty models for which Asus are refusing to issue a fix. I'd be inclined to invoke the warranty but the tricky thing is that it is actually the CPU which has the manufacturing fault.Agree with this (for Asus), no BIOS update for my board, so i'll not be buying them again.