dd seems to be faster using rdiskX instead of diskX as destination
in particular this line solved my problem:
than here is the command to use it
In the last days I am having some trouble running 5GHz 802.11n with this device and last version of OpenWRT. It turn out that b43 open source driver can’t work in N mode, so I switched to the proprietary WL broadcom driver. However, it cause my router to crash after a client connect to it.
I’m working on it.
log driver debug information with hostapd