Why can't I flash openwrt router?

Question

WiFi

Beeline router: Smart box One

(spoiler)

Версия Hardware v2
Версия прошивки v2.0.14

I stitched according to this instruction: link
It recommended that you first update the firmware of the router from the beeline. This has been done.
I got to the step where you need to upload the smartbox-to-boot_97d.img bootloader through the update button in the web-muzzle.
Gives the following problem:

Внимание!
Upgrade file is not the correct type or version for this device.
Upgrade failed.
Please obtain the correct file and try again.

Answer 1

check the openwrt website for support for your router model, or see a few other instructions.

Answer 2

This is the bootloader from the n300 and you have the n600. they are similar but I never managed to flash it on my router. Subscribe if everything worked out))