mate 10 successfully to downgrade from EMUI 9 to 8

[mahesh_parmar]

Looking for a device in upgrade mode
COM8: Android Adapter PCUI (COM8)
COM9: DBAdapter Reserved Interface (COM9)

4/9/2019 6:14:55 PM Starting to write device in UPGRADE mode...
File to update: UPDATE.APP
Current version: ALP_Global_xloader
Validating file...
Looking for attached port...
Preparing to write...
Writing file 1 of 43: SHA256RSA...OK
Writing file 2 of 43: CRC...OK
Writing file 3 of 43: CURVER...OK
Writing file 4 of 43: VERLIST...OK
Writing file 5 of 43: PACKAGE_TYPE...OK
Writing file 6 of 43: HISIUFS_GPT...OK
Writing file 7 of 43: XLOADER...OK
Writing file 8 of 43: FW_LPM3...OK
Writing file 9 of 43: HHEE...OK
Writing file 10 of 43: FASTBOOT...OK
Writing file 11 of 43: VECTOR...OK
Writing file 12 of 43: VBMETA...OK
Writing file 13 of 43: MODEMNVM_UPDATE...OK
Writing file 14 of 43: MODEMNVM_CUST...OK
Writing file 15 of 43: TEEOS...OK
Writing file 16 of 43: TRUSTFIRMWARE...OK
Writing file 17 of 43: SENSORHUB...OK
Writing file 18 of 43: FW_HIFI...OK
Writing file 19 of 43: KERNEL...OK
Writing file 20 of 43: RAMDISK...OK
Writing file 21 of 43: RECOVERY_RAMDISK...OK
Writing file 22 of 43: RECOVERY_VENDOR...OK
Writing file 23 of 43: RECOVERY_VBMETA...OK
Writing file 24 of 43: ERECOVERY_KERNEL...OK
Writing file 25 of 43: ERECOVERY_RAMDISK...OK
Writing file 26 of 43: ERECOVERY_VENDOR...OK
Writing file 27 of 43: ERECOVERY_VBMETA...OK
Writing file 28 of 43: HDCP...OK
Writing file 29 of 43: DTS...OK
Writing file 30 of 43: DTO...OK
Writing file 31 of 43: CACHE...OK
Writing file 32 of 43: SYSTEM...OK
Writing file 33 of 43: CUST...OK
Writing file 34 of 43: ISP_FIRMWARE...OK
Writing file 35 of 43: MODEM_FW...OK
Writing file 36 of 43: HISEE_IMG...OK
Writing file 37 of 43: HISEE_FS...OK
Writing file 38 of 43: VENDOR...OK
Writing file 39 of 43: VERSION...OK
Writing file 40 of 43: ODM...OK
Writing file 41 of 43: PRODUCT...OK
Writing file 42 of 43: USERDATA...OK
Writing file 43 of 43: UFSFW...OK
Software written

4/9/2019 6:34:49 PM Starting to write device in UPGRADE mode...
File to update: update_ALP-L09_hw_eu.app
Current version: ALP_Global_xloader
Validating file...
Looking for attached port...
Preparing to write...
Writing file 1 of 9: SHA256RSA...OK
Writing file 2 of 9: CRC...OK
Writing file 3 of 9: CURVER...OK
Writing file 4 of 9: VERLIST...OK
Writing file 5 of 9: PACKAGE_TYPE...OK
Writing file 6 of 9: HISIUFS_GPT...OK
Writing file 7 of 9: CUST...OK
Writing file 8 of 9: VERSION...OK
Writing file 9 of 9: USERDATA...
Writing file 9 of 9: USERDATA...OK
Software written
4/9/2019 6:41:30 PM Writing device finished OK