I am new to this thing but after 3 years I thought of rooting my phone(HTC DHD). I tried rooting my phone using the given link:
http://forum.xda-developers.com/show....php?t=2221039, I unlock my bootloader using htc dev and its works like charm. I followed the steps mentioned in the above link. Evrything works fine till 5th step but now its throwwing me error in this step: adb shell dd if=/dev/block/mmcblk0p22 of=/data/local/tmp/boot.img "Permission denied.
I saw couple of other people have also posted and asked about the same thing but no one has given the direct (concrete) solution.
I am very new to this thing so it would be really helpful if you can guide with the next steps.