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ESC upgrading thingie


Junior Member
Hello i know that i need a USBasp programmer for the upgrade of an ESC i found on hobby king this one but im from argentina and it is compliated to get it here so i found other two options on an argentinian site: this one and this the item description is in english and now my question.
wich one is the one i need for the ESC firmware flashing?

i already have the HobbyKing 20a ubec ESC and i want to flash them to build a quadcopter.
thx all
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