firmware 1.7.4 range test result

[imp]

Dear all..

These day, I found some critical issue..

still I use hostap with firmware 1.5.6 or 1.6.3 firmware version.

Yesterday, I try to change my firmware to 1.7.4 then I found some issue..

I upgrade firmware using winupdate. then the hostap run very well.. by the way, 

the firmware 1.7.4 's AP mode range too short .. when I work away from hostap only 10 M then the link quility down and loss the link..

So, I try the test again with 1.5.6 and 1.6.3 then the range is good as well as...

Are there anyone have any comment for me ? 

Best regards !!!