I have a problem with the BIGtec BIG687 usb wlan device based on the Ralink RT5370 chipset.
When I use the rt2800usb driver from the compat-wireless-2012-05-10 backport with kernel 220.127.116.11 in combination with hostapd, the data transfer stucks and I get following error
phy0 -> rt2x00usb_vendor_request Error - Vendor Request 0x07 failed for offset 0x101c with error -145.
The behaviour is the same with modprobe rt2800usb nohwcrypt=1.
Does sombody uses the an Ralink RT5370 based usb device and has a solution for the problem?