Think of it as replacing a fuse. How might it be better to take the blown fuse out and leave the circuit open? The jumper restores the connection to the antenna.That seems and sounds crazy,to what good would that do ?or not do
To me that's causing a signal loss not a gain
You would probably get more help if you didn't assume everybody knew what you meant by "jumper mod".
Yes, that's my last option.. A new a board.. Yes, it's not hard to find. But most of sellers that I found is having difficulty to ship in my location. I'm very much willing to pay.In wouldn’t be too hard on yourself- it’s a difficult job even with the right gear.
A new main board won’t be expensive and shouldn’t be hard to find. Even if it worked the performance wouldn’t have been 100%.
"If your chip is fried because of updating via wifi..." I haven't done a lot of updates but, when I do, it's via cable. But, regardless, if I was simply updating the firmware and smoke started trickling from my drone due to a "fried" IC chip, no amount of jumpering would get my drone back in the air reliably, if at all, and I seriously doubt any chip could get shorted during a simple firmware update. It is possible to "brick" a drone by interrupting an update, using wrong firmware, etc. during the process but Ozzy23 doesn't indicate that that was the problem. If, for whatever reason, a drone was bricked, a momentary jumpering of certain chip pins might clear the lockup for a re-install but the purpose of a permanently soldered jumper seems illogical to me. A chip that burned from being "fried" during a WiFi update sounds like a problem that DJI would be responsible for.