Probé con varios firmwares y con ninguno funcionó
Operation: Read Codes via Server [UPLOAD Mar 2021]
Selected model: SM-G973F
Software version: 43.2
Checking Login and Password... OK
Balance: 12 crd.
You have 12 credit(s) left. This operation takes 8 credits. Attention! In case if phone asking MCK code, using this method will consume credits twice - first for MCK code and then for NCK. Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-G973F
Android version: 11
PDA version: G973FXXUAFUE3
CSC version: G973FOXMAFUE3
Phone version: G973FXXUAFUE1
Product code: SM-G973FZBLBTU
CSC country code: UK & IRE
CSC sales code: BTU
Carrier ID: ANC
Phone SN: R28M30D49CK
IMEI: 354618100755629
HW version: MP 0.700
RF cal date: 20190306
Chip name: EXYNOS9820
Modem board: SHANNON5000
Security patch: 2021-05-01
Boot Warranty bit: 0
SIM State: ABSENT
Searching Samsung modem... detected COM5
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Executing... OK
Searching Ramdump interface... COM6 detected
Rebooting phone... OK
Waiting ADB device... OK
Waiting for device to become ready... OK
Reading ramdump data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... error (1)
Server error: Could not process security data, please try again
