Sorry still
Sorry still confused what you are after... you need the part number of the black thing ???
I've got 2 infront of me... looked at them with a torch can't see any part numbers..
I can post up pics if that is what you need.. but I don't see any sort of markings on either of 2 I have...
I can see some of the other pieces have markings.. like the other smaller black thing also with 8 legs, thats got some markings... but on the piece you are refering to I can't see any markings... maybe they have rubbed off..
I have a brand new wifi module but don't really want to take it apart sorry..
Are you trying to replace just the little black thing ??? I am happy to send you both my wifi modules for free and you can take out the black thing.. I can send them both, and would fit in a normal envelope with a little padding to protect.. Both of wifi modules I have issues though... I assume the black thing is some kind of microcontroller type piece ???? So it might be useless.. but if you want I am more than happy to send 2x of the pieces you took a pic of.. you can remove the black thing and try...
Any ideas how yours burnt out ? I know its one of the parts in the quad that gets the hottest; However I had been running mine with boosted power for like 6+ months and never had issues. Only ended up buying a new one as I broke mine myself when trying to do something to it :/