1) QCOM Mode> Qualcomm HS-USB Diagnostics Port - unlock does not work
2) BP Tools > (Manually install Motorola QC Diag Port) - unlock does not work.

GC Pro doesn't support Motorola E4 Plus Sprint ?

Using Version...1.0.0.0071
Selected Port Qualcomm HS-USB Diagnostics 9091 COM10
Selected Model GT-I5500
Selected Task Moto Unlock

Searching phone...
Device Detected...
SELinux := Enforcing
model:= Moto E (4) Plus
Android Version:= 7.1.1
Description Version:= owens_sprint-user 7.1.1 NCRS26.58-44-25 32 release-keys
Platform:= msm8937 [ qcom ] [ ]
Baseband:= M8920_02.02.06.79.06R OWENS_NA_CUST
Internal Model := XT1776
Factory Ver := Blur_Version.26.301.32.owens_sprint.sprint.en.US
Security Patch := 01-06-2019
ABI:= armeabi-v7a SDK Ver:= 25
Simstatus:= UNKNOWN
ANDROID-ID = ZY224D4BXP_00001E2018
Device is not rooted

Build...MPSS.TA.2.3.c9-00009-8940_GEN_PACK-1.204023.1.205863.1

Motorola Unlock Started..
IMEI-1 := 990007510463290
Fail to write spr simlock.
Fail to write spr simlock..
Fail to write spr simlock...
IMEI-1 := 990007510463290
IMEI-1 Read-Only Fail to Write..
IMEI-1 := 990007510463290
IMEI-1 Fail..TYzRCcAwEEJXilDC3WeSS9d4+2/RIqQURJ4i9kI3GqjorwtNx4U2ShQelCE8CHoa2ik/Dfs+ED+Y/l9WcrUH
IMEI-1 := 990007510463290
IMEI-1 Fail...M3OJN3SLN3SON3SNN3ONNwRyLXAgQzDpFG/oCFVvaAkWcUPSBVZjZglmGIBFHMGkK5jhBtNrGW9iAAA=
Retrying...
Fail to write gsm simlock. 3

!!! Fail !!!!
Restart Phone if not auto...
Total Time Take...00:00:52
Log Saved