There are now 2 versions of the tool created by Mazzif. The Original Windows based system what creates a key based on your input, or the new DOS based tool that gets all parameters automatically. See this [ Post ] for information on the newest release. The windows based solution offers a bit better support for more models, while the DOS tool-set is just easier to use.
HP 6550B, HP 2530P, HP 6930P, HP 8530W, HP 8460P, HP 6460B, HP 2230S ,HP 6455B, HP 2730P, HP 8530P, HP 2740P, HP 4310S, HP s4510, HP 6535B, HP 6730B, HP 6735B, HP 8730W, HP 2560P, HP 8560P, HP 8440P, HP 8540W, HP 8560W
If your model is not listed you may experiment with the ‘Make All’ or SHOTGUN.