• Arduino MEGA (better), or Cheap USBAsp from eBay
• Soldering iron
• Enameled Copper wire, diam 0.2mm
• Solder
• 3 Pin female header pitch 2.54mm
• Large heatshrink tube. I used diam 24mm.

• Remove the plastic of the ESC
• Glue the header onto the regulator (next to the cap). Try to have it flush the edge so you can keep it accessible for later.
• Solder the wires from the test points to the header
• Connect the header to the arduino mega
• Power the ESC

It's a little bit complicated for two reasons: I first used owSilProg before I discovered BlHeliSuite and I couldn't flash a new ESC directly with BlHeliSuite. But it worked, on ten ESC.

• Get owsilprog
• Use the AVRBurn tool to flash the firmware onto the arduino mega
• Use owSilProg to flash the ESC with BlHeli. Select HK10A MULTI.
• Flash all your ESC
• Get BlHeliSuite
• Use the AVRBurn tool to flash the BLHeliSuite programmer firmware (use the PB2PB3 or MULTI one (I think))
• Reflash the ESC with the most recent BlHeli firmware

• Cut a length of heatshrink tube so the ESC fits in. Have 3mm on both sides of the board.
• Heat in place
• Fly the damn uav !

• https://github.com/bitdump/BLHeli/tree/master/SiLabs
• http://oddcopter.com/2012/07/18/flashing-silabs-escs-with-blheli-firmware/
• http://www.olliw.eu/2012/owsilprog/
• https://github.com/x893/C2.Flash
• http://akb77.com/g/silabs/jump-to-silabs-step-1/
• http://stigern.net/blog/?p=456