You killed it by flashing with firmware reserved for HW rev V2. For now only boot repair will help.
Always make sure you choose properly FW.
!Devices with HW rev V1 can be flashed only with FW V1, HW rev V2 only with FW V2!
Why you still use V1.88??
Update
V1.92 bring warning before flashing your phone with incompatible revision.
I saw you flashed it from dead mode. Why? Are you forgot how to enable WinUSB mode(
*#*#2273#*#*)? If you did, phone will be detected by BEST.
From
V1.93 - BEST uses own ADB layer. The only thing you need to do is connect phone to cable and it will be detected by BEST - another update worth install.
Conclusion - install updates and read damn changelogs.