While I was contracted by the foundation, lab and field testing identified a couple failure modes that were deemed critical. After my contract ended, the foundation continued with the development but I don't have any insights into what has been accomplished. You will need to contact the foundation for more details.
I have been working on a new version of the pump as well – one that resolves the problems found in testing, reduces the cost, and makes maintenance even simpler. At the moment we are applying for funding from various organizations so that we can complete the prototypes and perform lab and field testing.
Could you tell me more about your interest in the manual pump? Do you have a specific location in mind and if so, what are the pit contents like?