[TauheedMobiles]

Originally Posted by easy-team

Hello everyone

Some times when we try to downgrade Huawei Android 10 device we got this error :

Bypassing downgrade protection.....Failed: writing failed, Please contact support team

First make sure that your device mode, downgrade file and selected model in EFT Pro are identical , if all OK*move to next*step

Put device in Upgrade Mode by pressing Vol+ & Vol- and connect USB*cable

If device software is faulty after the downgrade failure and not going into Upgrade and instead it goes into recovery* mode or showing below*error



Then Do the following

Turn off device completely then press Vol+ and connect USB cable while keep pressing Vol+ for 30 seconds

Device will get into this mode then we select Update Mode



Then select USB Upgrade mode



Then device will get into Upgrade Mode



Now navigate to Huawei >>Flash>>

Flash Multi App files ( Upgrade Mode)

Load the*files

A O D*

one after one then flash device (upgrade mode)

wait till process finish and your done








Best Regards

Easy Team

I DONE IT THNKX FOR HELP MY SET WAS BRICKED



Checking fastboot device.....OK Reading info.....OK
Device Model: JSN-L22
Device Firmware: :JSN-L22 10.0.0.187(C185E2R1P1)
Device FB Lock: LOCKED
Device USER Lock: LOCKED
Device Lock: locked
Checking needed files.....OK
Writing image 1.....OK
Writing image 2.....OK
Writing image 3.....OK
Switching to upgrade mode.....1OK
Waiting for Upgrade Mode port.....OK
Connecting to device.....OK
Start processing file [1.APP] 3,43 GB:
Firmware version: JSN 9.0.2(OVS)
Flashing [sha256rsa.img].....OK
Flashing [crc.img].....OK
Flashing [curver.img].....OK
Flashing [verlist.img].....OK
Flashing [package_type.img].....OK
Flashing [hisiufs_gpt.img].....OK
Flashing [xloader.img].....OK
Flashing [fastboot.img].....OK
Flashing [dts.img].....OK
Flashing [dto.img].....OK
Flashing [vector.img].....OK
Flashing [fw_lpm3.img].....OK
Flashing [hhee.img].....OK
Flashing [teeos.img].....OK
Flashing [trustfirmware.img].....OK
Flashing [sensorhub.img].....OK
Flashing [fw_hifi.img].....OK
Flashing [kernel.img].....OK
Flashing [vbmeta.img].....OK
Flashing [modemnvm_update.img].....OK
Flashing [modemnvm_cust.img].....OK
Flashing [recovery_ramdisk.img].....OK
Flashing [recovery_vendor.img].....OK
Flashing [recovery_vbmeta.img].....OK
Flashing [eng_vendor.img].....OK
Flashing [eng_system.img].....OK
Flashing [cache.img].....OK
Flashing [system.img].....OK
Flashing [cust.img].....OK
Flashing [isp_firmware.img].....OK
Flashing [modem_fw.img].....OK
Flashing [hisee_img.img].....OK
Flashing [hisee_fs.img].....OK
Flashing [vendor.img].....OK
Flashing [version.img].....OK
Flashing [odm.img].....OK
Flashing [product.img].....OK
Flashing [preas.img].....OK
Flashing [preavs.img].....OK
Flashing [userdata.img].....OK
Flashing [preload.img].....OK
Flashing [erecovery_kernel.img].....OK
Flashing [erecovery_vendor.img].....OK
Flashing [erecovery_ramdisk.img].....OK
Flashing [erecovery_vbmeta.img].....OK
Flashing [patch.img].....OK


Start processing file [2.app] 868 MB:
Flashing [sha256rsa.img].....OK
Flashing [crc.img].....OK
Flashing [curver.img].....OK
Flashing [verlist.img].....OK
Flashing [package_type.img].....OK
Flashing [version.img].....OK
Flashing [userdata.img].....OK
Flashing [preload.img].....OK
Rebooting device.....OK
Operation {Flash APP Firmware} ID: 14E8D472F8032E93
Elapsed time 15:53 -- Version 2.4