What methods are you trying I just got this phone yesterday and I don't Wana waste time trying stuff ppl have tried and confirmed doesn't work
+ First, I tried all the generic one click crap(KingRoot, Kingo, Etc.) as always since it's a Chinese phone.
+ Tried a few gray area tools like MiracleThunder, Uni-Android tool and such, come up empty handed.
+ I've tried every firehose from similar hardware available and they all seem to be fruitless ruling out EDL mode.
+ Fastboot is available but actively refuses commands.
+ OEM Unlock is a dummy toggle.
+ Hidden activity for "The Factory Upgrade" I haven't looked so much into, as like recovery it's probably looking for a signed zip.
+ CVE-2019-2215 and CVE-2019-10529 are dead ends, seems the kernel was patched correctly. Any older exploits e.g Dirty Cow variants outright fail as it has kernel 4.9+
Other notes: The ROM is buggy as hell, so they messed up somewhere I just haven't found it yet.