Before Oppo A37f Userlock Remove, Make Sure The Following Steps Are Performed:
Install QcomMtk_Driver_Setup Lasted
LINK – DOWNLOAD
How To Connect Qualcomm 9008 EDL Mode?
1.Qualcomm Old Model > Power Off / Vol+ Vol- USB Connect
2.The Oppo A37f is a Qualcomm unit.Therefore, it is necessary to cover the back and support 9008 Test Point.

Device : Oppo A37f
Operation : Format FS
Checking for existing devices…Not Found
Turn Off phone, hold Vol UP + Vol DOWN and insert USB cable.
Some phones may need Special Boot Cable or TestPoint for EDL mode.
Found Port
Driver Info : Qualcomm Incorporated, qcusbser.sys, 2.1.2.7
Connecting to phone…OK
Waiting for response…OK
Init Handshake Sequence…OK
Hardware ID : E1507000 [8916] 00000000
OPK_DATA : 9CBA94693C2333A562BCF0E0E981C558748817D002F543B2A26AB1B4B3F1CF9E
Initializing Protocol…OK
Using Auto Loader Selection [1]
Preparing Loader…Done
Sending Loader [8916_014]…Done
Executing Loader…OK
Detecting Chip Type…OK
Hardware : 8916, EMMC, 16 GB
LU Count : 1 [0x01D5A000]
WARNING! High Speed Driver is not installed.
Please install driver from QcFire\Drivers folder using Device Manager.
Payload Info : In: 65536 [4096], Out: 16384, Sector Size: 512
Reading Partition Table…OK
Reading Device Information…OK
Device : OPPO A37f [msm8916]
Brand : OPPO
Prod.Name : A37f
Software : A37fEX_11_170701, 1480422943 [Sat Jul 1 11:31:46 CST 2017]
Android Ver. : 5.1.1
Patch Level : 2017-06-01
Formatting userdata [SafeMode]…Done
Resetting FRP Lock……Done
Operation Finished.
QcFire Ver. 7.3
Download UMT Qcfire Lasted Version
LINK – DOWNLOAD
Oppo A37F 9008 Dead Logo Fix Firmware File
LINK – DOWNLOAD
