I probably should have opened a new post for this (and will if asked.) Instead, I replied to this one because it describes my problem AND I am interested in the possibility of dual booting NAND or NOR as described by void-naught-zero-0.
Now for my real problem. I have the AR300M-ext and I am trying to flash it via uboot. I successfully did this once. I also successfully flashed OpenWRT via the router GUI (not the uboot page. Maybe it is called LEDE?!?!?).
However, flashing via uboot is failing for me now. I have tried it unsuccessfully many times and this is what is happening:
I upload the firmware from the uboot http page and all of the green and red lights flash continuously during/after the upload.
*the firmware I have tried to flash (the .img files using uboot) are the following:
openwrt-ar300m-nand-3.024.tar (this update was not uploaded via uboot and it worked)
So, I have (most recently) uploaded the “clean” image and left it all night. It is still flashing its lights in the following manner:
*** One green led on all the time (mostly).
*** After about 9 seconds, the middle green and the red light flash briefly while the main green light turns off (this is very brief.)
**** The main green light instanly turns back on and stays on.
*** Then, after a few more seconds, the red led blinks once, followed quickly by both the red and middle green light quick simultaneous blink.
*** This pattern then repeats ad nauseam.
I can send a gif/vid of the lights if it will help.
I appreciate any advise on what may be wrong or what is causing this. Better still, would be instructions on fixing this awesome little router! I am asking here before returning item as defective. Thanks for any help.