Oh, i have to say: i did not do a local update, i do it via SP-Flash-Tools. I don't know if it works via local update.
My build-number contains still v01_20170412
my kernel build is from 2018 now
when i go to system-update, there's something like v01_20170412_20180104-1351
with the build-number, it is a bit confusing (because it's old), but it still applies
Batteryperformance looks ok to me. About 25% in the night before, 20% after wakeup.. not better or worse for me, but i not reconized a issue there till now anyway edit:
i don't know if it's by hardware or software/upgrade, but today i had a batterycrash with reloading over hours. also, the preloader (batterysymbol when phone is "off") does not come to battery-percentage - right now i was able the first time to start the system again. the battery was at 3 percent. when the phone was off, only the battery with circle was shown and screen stays enabled (what costs lot of energy which is used to load) - so you may see my idea, why the preloader could be problematic.
the very empty battery could also be a bit of dirt or what do i know, doesn't have to be the firmware in my opinion..
personally, i hope it loads till 100% and works as usual then. i will keep my update and maybe downgrade the preloader only.
someone else expirienced this?edit 2:
ok, it was definently hardware.. what a torture i had now, i opened the phone a few times, but the first time at all..
usb-connector was flickering, i had to bend the inside of bv6000's connector a bit with small zip-ties.
camera-connector was not pressed after opening, so i downgraded and made a factory-reset to test if this is firmware - nope. opening once more was the solution.
so far, the firmware looks ok then. sorry for the misleading intepretations i've wrote.
ps: very nice and structured inside, blackview. everything is accessible and nice to disassembly for fixing, compliment, this is very cool!