both logs were received from the bad MT2500 and both logs end with the error messages
:
[ 0.978244] mmc0: error -110 whilst initialising MMC card
[ 1.085619] mmc0: error -110 whilst initialising MMC card
[ 1.207959] mmc0: error -110 whilst initialising MMC card
[ 1.375250] mmc0: error -110 whilst initialising MMC card
[ 3.975955] block2mtd: error: cannot open device /dev/mmcblk0p1
[ 3.982041] hctosys: unable to open rtc device (rtc0)
[ 3.987614] Waiting for root device PARTLABEL=rootfs...
I am not even sure if you checked the attached logs.
There is a similar thread regarding MMC0 errors and MT2500 unable to boot:
https://forum.gl-inet.com/t/repeat-kernel-panic-in-gl-mt2500a/39828