I installed OpenWrt and discovered that it is terrible on this device and it does not save settings on reboot and I would like to revert it back to its stock firmware. I've read topics on this forum suggesting that the firmware must be stripped, but I am not really sure how to go about it without sc…

Please keep in mind that the second thread you linked talked about the TL-WA850RE which is not compatible to your TL-WA855RE. And the other thread, covering the 855RE, doesn't have a solution. And the Wiki article, again, does not cover your TL-WA855RE. From what I could gather from the Git commit …

Revert OpenWrt to stock on WA855RE v1 EU

Installing and Using OpenWrt

Daniel7689 May 13, 2023, 2:40pm 3