Lg -LS770 can not unlock bug on software


Hi team im trying to unlock ls770 always stuck here even i put msl code enable dig still just stop here

Code:

Welcome to Octoplus/Octopus Box LG Software version 2.6.0
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG Qualcomm
Selected port: COM4
Selected model: LS770
Reading info...
Initializing ADB...OK
Waiting for phone...OK
Model ID: LGLS770
Phone firmware version: LGLS770AT-00-ZVB-SPR-US-JAN-19-2017+00
Kernel version: 3.10.49-gc5ab72b (lgmobile@LGEACI8R8) (gcc version
4.9.x-google 20140827 (prerelease) (GCC) ) #1 SMP PREEMPT Thu Jan 19
12:11:31 KST 201
Android version: 6.0
Hardware: Qualcomm Technologies, Inc MSM8916 0
Please, type ##3424# to get SPC / MSL / Service Code...OK
Input 502207, go to "Diag" menu and select "Enable" option.
Performed by 2.6.0 Software version.