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To read security codes using sever:
1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options',
go to 'Settings'-'Developer options' and enable 'USB debugging'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press 'Unlock' button, select 'Unlock via server ...' algo,
write your login and password in window if it will appear.
(Login and password will be saved as default after first input and can be changed in settings.)

Operation: Unlock
Selected model: SM-G973F
Software version: 44.15

Checking Login and Password... OK
Balance: 25 crd.
You have 25 credit(s) left. This operation takes 5 credits. Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-G973F
Android version: 11
PDA version: G973FXXSEFUJ2
CSC version: G973FOWAEFUJ6
Phone version: G973FXXUEGVA2
Product code: SM-G973FZGLCRC
CSC country code: COSTA RICA
CSC sales code: CRC
Carrier ID: PCT
Phone SN: R28M2186G1A
IMEI: 354618100349639
HW version: MP 0.700
RF cal date: 20190218
Chip name: EXYNOS9820
Modem board: SHANNON5000
Security patch: 2021-11-01
Boot Warranty bit: 1
Checking Super user right... true
Root version: 24.1:MAGISKSU
Checking data... OK
Searching server... OK
Checking server answer... OK
Data preparation... OK
Initialization zTool... OK
Running zTool, please wait... OK
Executing 1st step... OK
Executing 2nd step... OK
Searching server... OK
Waiting for server answer...
in Samsung Tool by (180 points)

1 Answer

0 votes
Hello. Disable firewall/antivirus, connect another isp and repeat again.
by (156k points)
OK plz refund 5 card I try again
If credits consumed again - type here, we will refund.