techteendaily
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On Raspbian, using a HDMI to DVI-D cable tvservice cannot detect any possible EDID combination and defaulted to 640x480 with unnecessary overscan. Upon running tvservice -d edid you get "nothing written". So you'll have to refer to the table here and use the correct EDID combination and stick it into the /boot/config.txt file. Next open up the /boot/config.txt by typing sudo nano /boot/config.txt...

Prerequisite (Important) Make sure your Windows user account name has no space in them. (e.g. "John Stewart" will cause redsn0w to fail to parse the directory string and giving the "unexpected parameter error") If you are using such account, create a new account with no space in them and work in it. iTunes must be installed in order...