@TP-Link i contacted you via email support and they send me the official firmware(not the newest though) . now everything seems to work just fine.. only problem is my SNR even with external antenna...

Hello Everyone. Recently i bought MR600v1 and i upgrade to latest firmware (1.2.0 0.9.1 v0001.0 Build 200511 Rel.44954n). Strange things happened, like my speeds wasnt stable and was low max 80mbps,...