Q:

remove mirai virus on router

I need some help with removing the mirai worm on my rounter. Few days ago my ISP was on cyberattacks which it have affected over 100,000 customers who couldn't be able to get access to the internet that got shutdown.
Now it show that my local ISP are CloudMosa in Satatoga, California which is not. My ISP are postoffice in the UK.
I have tried to upgraded the latest firmware version from the manufacturer site which it is 2.00(AAJC.15)C0, I have also set the firewall to a high level to avoid the cyperattack and disabled the upnp but the virus will remove the latest firmware version and it will switch back to the old version V2.00(AAJC.15)O0. The name of the rounter I got is called ZyXEL AMG1302-T10B.
I don't know what i'm supposed to do and how to remove it as the virus keep coming back. I'm scary to use the internet as it could steals my information especially my bank details, username and password.
Do you know how to remove those nasty virus on the router?

A:

I agree that this does not seem to be Mirai, but it doesn't really matter what it is. The solution is the same no matter what.
If a firmware rewrite does not kill it, then just throw the router in the trash and get a new one. I know, it might cost you some money, but it is the only way you can be sure it has not somehow persisted on the device. Just consider the router as broken beyond repair.

