Edimax EW-7711USn small test

Hi all, lately I’ve purchased an Edimax EW-7711USn usb stick to use it with backtrack R2.
It has the Ralink RT2870/3070 chipset and airmon-ng recognized it at once (driver rt2800usb).
But when I tried to inject I had no luck!
Although the aireplay-ng test showed that injection was ok. (fig.1)
Attachment 633
fig.1
The solution to injection came with installing compact-wireless-2.6 and following the aircrack-ng guide cause I’m kind of a noob… except from the compact-wireless drivers I had to install the 2 patches too so as to get it work. (everything explained well in the aircrack-ng guide)
The result was quite good but I only managed to inject packets using the fragmentation attack. I had a satisfactory rate of packets injected. (fig.2)
It didn’t work for the chopchop attack… maybe someone more experienced in this forum can explain this…
Attachment 634
fig.2
As far as everything else i think it’s a very good usb stick with good coverage (31 AP’s compared to 7 with my previous little but precious (using rt73usb driver) Belkin F5D7050) and works just fine with macchanger.