SM-J260AZ locked with APK from Cricket, unlocked successfully (J260AZTUU1ASA1):
P.S. World first 
Code:
17:03:56 > Checking server 1: OK!
17:03:56 > Connecting to server: OK!
17:03:58 > Asking server for access: OK!
17:03:58 > Disconnecting from server: OK!
17:03:58 > USING: MICRO-BOX A.I.O. NEW V4.0.3.3
17:03:58 > MICRO-BOX SN: 27F0F640B649***A FW: 75/50
17:03:58 > PORT: ANDROID - ADB
17:03:58 > Samsung SM-J260AZ UNLOCK: START!
17:03:58 > Please power on phone and connect to usb in android debug mode!
17:03:58 > If phone ask to allow usb debuging please accept!
17:03:59 > KILLING ADB SERVER (IF RUNNING): OK!
17:04:08 > Searching for phone: OK!
17:04:29 > Reading info: OK!
17:04:35 > Reading modem info: OK!
17:04:35 > BRAND: SAMSUNG
17:04:35 > MODEL: SM-J260AZ
17:04:35 > J2COREPLTEAIO / J2COREPLTETU
17:04:35 > IMEI: 352453100952402
17:04:35 > HWID: SAMSUNGEXYNOS7570-3
17:04:35 > BOOT LOADER: J260AZTUU1ASA1
17:04:35 > COUNTRY CODE: USA / US
17:04:35 > SALES CODE: AIO
17:04:35 > VERSION: ANDROID 8.1.0
17:04:35 > BUILD M1AJQ / J260AZTUU1ASA1 (CP)
17:04:35 > J260AZTUU1ASA1 / J260AZAIO1ASA1 (PDA/CSC)
17:04:35 > FIRMWARE: J2COREPLTETU-USER / J260AZTUU1ASA1
17:04:35 > HARDWARE: REV1.0
17:04:35 > KERNEL: 3.18.14-15119239 (dpi@21HH1F13) (gcc 4.9.x 20150123 (prerelease) ) #1 SMP PREEMPT Thu Jan 3 21:09:12 KST 2019
17:04:35 > FINGERPRINT: SAMSUNG_J2COREPLTETU_J2COREPLTEAIO_8.1.0_M1AJQ_J260AZTUU1ASA1_USER_RELEASE-KEYS
17:04:35 > SECURITY PATCH: 2019-01-01
17:04:35 > WARRANTY BIT: 0
17:04:35 > PHONE SN: 4200BDCE97B6C54F_R28M11YRXWL
17:04:35 > UNIQUE NO: CQE00BDCE97B6C5
17:04:35 > CPU TYPE: EXYNOS5 / ARMEABI-V7A
17:04:35 > RIL MODEM: SHANNON305
17:04:35 > RIL VERSION: SAMSUNG RIL V4.0
17:04:35 > SIM STATUS: ABSENT
17:04:35 > CONNECTION: AT,MTP
17:04:35 > DEBUG LEVEL: 0X4F4C
17:04:36 > Checking server 1: OK!
17:04:37 > Connecting to server: OK!
17:04:42 > Asking server for access: OK!
17:04:45 > Getting credit from server: OK!
17:04:45 > CREDIT:
17:04:46 > USED: 0,00
17:04:46 > LIMIT: 0,00
17:04:46 > CREDIT SPECIAL:
17:04:46 > USED: 107
17:04:46 > LIMIT: 113
17:04:46 > Sending data to server: OK!
17:04:48 > Receiving data from server: OK!
17:04:48 > THIS PHONE WILL COST YOU 3 SPECIAL CREDITS!
17:04:56 > Searching for phone: OK!
17:05:08 > Restarting phone: OK!
17:05:42 > Searching for phone: OK!
17:06:07 > Reading info: OK!
17:06:09 > Reading modem info: OK!
17:06:09 > Sending data to server: OK!
17:06:16 > Getting data from server: OK!
17:06:21 > Searching for phone: OK!
17:06:25 > Connecting to phone: OK!
17:06:33 > Running tool: OK!
17:06:39 > Reading unlock data: OK!
17:06:41 > Writing unlock data: OK!
17:06:52 > Getting credit from server: OK!
17:06:53 > CREDIT:
17:06:53 > USED: 0,00
17:06:53 > LIMIT: 0,00
17:06:53 > CREDIT SPECIAL:
17:06:53 > USED: 110
17:06:53 > LIMIT: 113
17:06:53 > Disconnecting from server: OK!
17:06:53 > Samsung SM-J260AZ UNLOCK: END!
Thank you for fine support!!!