I built a sysupgrade image 18.06 for the ar750s but when trying to sysupgrade -v /tmp/openwrt-ar71xx-generic-gl-ar750s-squashfs-sysupgrade.bin the machine returns:
Invalid sysupgrade file.
Image check 'platform_check_image' failed.
Any help would be much appreciated!
(Checking the manifest, the first line mentions ath10k-firmware-qca9887 while the actual CPU is a qca-9563. MIght that be a problem?)