@ALD0 No, don't look for an OpenWRT firmware, just read through the pages of different tp link devices to find the tool to prepare your firmware file for uploading. I think I found it. Look at RE305...

@ALD0 Maybe some tools used for OpenWRT can help. I saw in some of the device pages that some tool is used on the firmware files to prepare them. Just search up some tp link repeater/router device...