Have any RT-AC56U owners updated to firmware v.378.9135?

I'm seeing lots of threads from owners of more current routers (AC87, et) having update problems, but none from those who own the AC56U like I do.

I have no interest in bricking my router or having any problems which is why I'm seeking others with the same device to see if they've manually updated. I've been running with v. 378.4585 without any problems in case you're wondering

Thanks.