How to program a hobbywing esc with external bec?

[superek4]

Hi,

How can I program the 150amp esc with a external bec?(the internal bec is spoil)it Dun seems to work. I used the programming card, with the external bec to the power, the esc wire to the program slot. Nothing?

The esc is working with the external bec as the servo is working. But I need to program the esc. Pls advise as I hv a race this 29th nov.