I was trying to build a firmware for the Linksys EA2750 with easyCWMP and Luci ...It has MT7620A, MT7530.
In the menuconfig I choose
Target System (MediaTek Ralink MIPS)
Subtarget (MT7620 based boards)
Target Profile (MediaTek MT7620a + MT7530 EVB)
and other packages for the CWMPclient and Luci as necessary
I am not sure about the subtarget and targetprofile I chose.
So now after the make was completed I flashed the sysupgrade bin file and it went fine and said successful upgrade but nothing really happened as it came back with the same Linksys webpage... I dunno why I did it but just out of curiosity I flashed it with the other bin file (openwrt-ramips-mt7620-mt7620a_mt7530-initramfs-kernel.bin) and it bricked the router.
Please help me build a working firmware and also the brick as the reset button is not functional and I am trying the tftp but not sure if it will also work as the reset button itself is not causing any change in the blinking pattern of the LED's.