Xperia p cwm installation

Hello.. My xperia P phone has usb problem it does not connect to any computer, USB is almost dead only charging works. I unlocked the boot loader but could not install cwm recovery mode. Is there any way to install CWM without USB connection? I tried installing using busy box and root browser but not sure about the files whether it was compatible.. The root checker shows the phone is unrooted but it shows unlocked when *#*#7378423#*#* service test used......
please correct me if any thing went wrong, I am just a beginner. :)
thank you