I don't think I've ever seen this before — firmware updates directly in the browser! Typically you have to install some kind of desktop app and connect it through USB to make it happen... imagine if this technique were applied to printers, hard drives, and other peripherals!
This is a super cool use of browser tech!
It doesn't currently support Safari or Firefox - so if you don't have Chrome you'll be forced to install it to update the firmware?! 😅😂🤣 I don't see the problem with downloading the firmware from another browser.