Hi everyone!
I manage to install OpenWRT using acecilia's telnet exploit
One MIR4A 100m got softbricked. And I need to download the stock [chinese] firmware.
I hope someone has a copy of the firmware: miwifi_r4ac_firmware_e9eec_2.18.58.bin
http://bigota.miwifi.com/xiaoqiang/rom/r4ac/miwifi_r4ac_firmware_e9eec_2.18.58.bin is not accessible at the moment.