How to upgrade BKL to Pie

Download:
- https://kremowka.xyz/files/recovery_ramdisk_BKL-L04_nocheck.img
- http://update.hicloud.com:8180/TDS/data/files/p3/s15/G3536/g1699/v216624/f1/full/update.zip
- http://update.hicloud.com:8180/TDS/data/files/p3/s15/G3536/g1699/v216624/f1/full/BKL-L04_hw_usa/update_full_BKL-L04_hw_usa.zip

Run the following (this can either be from your current ROM, Stock, or TWRP) on your PC:
adb root
adb push recovery_ramdisk_BKL-L04_nocheck.img /sdcard/
adb push update.zip /data/update/HWOTA/update.zip
adb push update_full_BKL-L04_hw_usa.zip /data/update/HWOTA/update_all_hw.zip
adb shell

Then from ADB shell, execute:
echo "--update_package=/data/update/HWOTA/update.zip" > /cache/recovery/command
echo "--update_package=/data/update/HWOTA/update_all_hw.zip" >> /cache/recovery/command
dd if=/sdcard/recovery_ramdisk_BKL-L04_nocheck.img of=/dev/block/platform/ff3c0000.ufs/by-name/recovery_ramdisk
reboot recovery (edited) 
Then after that succeeds, immediately hold vol-up and power to boot to recovery, then format userdata/cache