Akitio - inXtron Firmware
Can you help me to take the stock of firmware situation ?
In particular, where to find them and what are the certified devices that can perform the upgrade.
well if you mean the situation with the akitio node, all thunderbolt 3 certified pc's can do the trick. If you happen to have a macbook pro 2016 and have bootcamp installed, there is a method described how to do the firmware upgrade in windows 10 bootcamp on your macbook pro 2016. Look for it on the forum.
I've never seen any firmware updates for the Thunder2 or 3 from Akitio or Inxtron although I've have not emailed them either and asked about it.
The firmware updater works only on Thunderbolt3 Windows PC. If you're using a L'16 Thunderbolt3 Macbook Pro, this user was able to get it working on bootcamp: https://egpu.io/forums/thunderbolt-enclosures/akitio-node-thunderbolt-3-egpu-enclosure/paged/6/#post-6718
ex-AKiTiO Employee as of August 2018.