I recently tried downgrading my bootloader version and I guess it didn't work. Whenever I turn my phone into flash mode, all I see is a black screen. Is there a way to upgrade it back to 8.26 or something? The black blank screen is bothering me.
No need to upgrade. Look what RSD Lite says about the bootloader. The lower 07.D0 and 07.E0 don't show on the screen after downgrade. That is very common. Only way to check is with RSD Lite in BL mode. If the phone is recognized as connected, all is well.
Yes all is well and up to go. You got the best Bootloader for theV3 R374 on it now. Really no need to upgrade, and no need to worry about the black screen. Many have been worried before, but time has proven, there are no side effects further then that.