@Marvin_S Thank you for the reply, much appreciated. The article you pointed me to made me realize that there is a ZIP file inside a ZIP file. So one needs to upload the ZIP file inside the ZIP file...

Hello, I have a TP LInk M7350 4G LTE (EU) with hardware version 5.0 that I would like to update, as I have some power setting issues with it and I see that one of the updates is trying to fix this....