I was asked to just have one question/issue per thread 
EDUP EP-RT2960 AX1800 - FW - 24.10.0 , from here https://openwrt.org/toh/sim/simax1800t
Minor issue:
Any hints to why the LED settings won't work ?
Would have expected this one , to make the led green , when the kernel was booted.
The led os doing some boot flashing (I suppose uboot) , and then ends up in "Solid blue".
When i bricked the system, and only uboot was running, it also ended up in solid blue.
Only time i saw green, was with the "original" factory fw.
Will this help ?
cat /sys/kernel/debug/gpio
gpiochip0: GPIOs 512-543, parent: platform/1e000600.gpio, 1e000600.gpio-bank0:
gpio-516 ( |wps ) in lo IRQ ACTIVE LOW
gpio-518 ( |blue:status ) out hi ACTIVE LOW
gpio-519 ( |red:status ) out hi ACTIVE LOW
gpio-520 ( |green:status ) out lo ACTIVE LOW
gpio-530 ( |reset ) in hi IRQ ACTIVE LOW
gpio-531 ( |reset ) out hi ACTIVE LOW
gpiochip1: GPIOs 544-575, parent: platform/1e000600.gpio, 1e000600.gpio-bank1:
gpiochip2: GPIOs 576-607, parent: platform/1e000600.gpio, 1e000600.gpio-bank2:
/Bingo