Support for flash OpenWrt Cisco MR32

Hi all,
Currently, I am trying to flash OpenWrt for Meraki MR32 that expired license.
Howerver I can't figure out where or how to get the "mr32-initramfs.bin" file referenced in the instructions.
Someone help me to share this file because I can't find it in the forums.
Many thank.

Link share in this post had deleted so I can't download.

Read the post after, or current, since I "fixed" the link.

Could you re-post link in this post?

Anyone share for me, plz