Hello,
According to the documentation RT-N19 also known as
AC1200 or N600 is oficially supported by Open WRT at least since [23.05.4].
I flashed my defice via Asus Recovery tool (TFTP) with (openwrt-23.05.4-ramips-mt76x8-asus_rt-ac1200-initramfs-kernel.bin) but it is not loaded after flashing.
I followed the instruction https://openwrt.org/toh/asus/rt-ac1200
According to the Internet Asus RT-N19 is based on Qualcomm QCN5502 instead of original AC1200 which is based on MediaTek MT7628.
I also tried Open WRT for QNC5502 based devices like RT-AC56U,RT-AC57U,RT-AC58U (openwrt-ath79-generic-asus_rt-ac59u-squashfs-factory.bin) but it also failed to load after flashing
Any idea about Open WRT device support? Further steps to understand what is going wrong or which Open wrt builds to try?