Hi, it's me again. My phone is Meizu M5 Note (M1621).
This time the preloader partition is changed because I tried to flash another version of official firmware while trying to unlock the bootloader.
If I try to download the preloader using SP Flash Tool, it shows error STATUS_SEC_DL_FORBIDDEN (0xc0020004).
So then I tried using the Write Memory feature suggested in my first thread. But it shows another error STATUS_SEC_WRITE_DATA_NOT_ALLOWED (OxC002000C).
What to do now?
Now my phone can't even boot into fastboot.
There's no vibration or anything showing on the screen, no matter I long press the power button or press both the power button and volume down.