Devo 7E not working after upgrading firmware

Hi All, I'm really need help. I just wondering if there is any solution to fix my devo 7e. I just bought it last month, upgrade to the latest nightly build last week, after the program update successful to my devo 7e. it suddenly turn off.. now it I cant even switch it on.. try to enter programming and USB mode also nothing happen like there is no power at all.. I have multimeter but the board seem nothing damage not even have burn smell. does anyone have been this situation before? is there any solution to fixed this?

I only mod the bypass diode and added 3 position switch to my devo 7e. others still in normal and still using AA battery for power supply.

im using deviations dfuse usb upgrade tool.

the latest one 2.31... my devo 7e firmware is deviation-devo7e-v5.0.0-c84450e

how to troubleshoot something like that? my TX is really new

actually I'm not really good at this.. hopefully there is more explanation and conclusion for this.

hi vlad_vy, i already try to connect two pin on the bypass it seem no power at all.. so i confirm that it was not about firmware but it something on my circuit any solution to fix this.. i don't have to much experience on this but I'm willing to fix it if somebody explained to me.

hi this is my board.. seem everything look okay.. i have multimeter but i only have basic knowledge.. wish to get more help.

Thanks!

hi, i don't know if you solved it, it's been a while since the last post.
cmq I try to tell you lamia even if I'm not an expert.
I don't think the firmware upgrade could have damaged everything and not even make it turn on. I think you considered charging the battery, right? at this point have you tried to enter usb mode?