How to squeeze omr?

[rdmitry0911]

Hi guys, I'm trying to build omr for MOFI5500-5GXeLTE em9191 router. It seems to be capable to run omr. It has 512MB RAM and MediaTek MT7621 4 cores cpu. However it has only 28MB of flash and omr doesn't fit into it. I tried to create an image selecting omr-minimal, but its size is about 43MB and is still too big. A working openwrt image for this device is only about 8MB. I think there is a way to remove unneeded parts from the image but I don't know to make it without a risk to remove also some of the required parts.

Any help would be very much appreciated

[Ysurac]

You can select packages you don't want in menuconfig, remove openmtpcprouter-full as it's force others packages (and openmptcprouter-mini is not updated), and remove xray and v2ray packages because they are huge.
MT7621 is a really slow CPU, don't expect too much from that...