Huawei Y9 2019 JKM-LX3 JKM-L03 (C45) FRP Remove

For phones with SD card slot - use SD card only.
For phones with no SD card slot - use OTG cable + USB or SD card with reader.

Instructions on How Update/Downgrade Huawei phones' firmware to July Security Patch:

1. Download and extract firmware - links are below
2. Copy "dload" folder to root of your SD card (SD card must be 4 or 8 GB at least and Good Quality)
3. SD card FileSystem must be FAT32, you may get an error if your SD card is on NTFS.
4. Press and hold Volume Up + Volume Down + Power Key until you see HUAWEI logo (phone will automatically enter into UPDATE MODE)
After phone is upgraded or downgraded to July firmware, follow the rest video to remove FRP/Google Lock.
As now that Safe Mode bug will work. Updating/Downgrading phones has always been risky. Do it at your own risk.