Hello every one!!
I have cisco 3620 router. I made a mistake when I upgrade the software. my previous image was c3620-i-mz.120-4.T. I erased it and copy the image c3640-i-mz.122-19a.bin from TFTP server. After I finished, I reloaded it. But when it boots, it says "wrong system software for this hardware" continously so that it can't start. How can I correct my problem please? or how can I copy the previouse image to my router from TFTP server? Actually I have taken back up the flash image before I upgraded.