a305f u4 patch failed [Answered]
 

REPAIR INSTRUCTIONS:
Phone must be rooted!
If the software can't root the phone automatically,
then you must root your device manually.
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. Fill values what you need to repair.
6. Press 'Repair' button.
7. Press 'Patch Certificate' if you have network problem after repairing.

Operation: Patch CERT Aug 2019
Selected model: SM-A305F
Software version: 42.1

Waiting ADB device... OK
Reading phone info...
Model: SM-A305F
Android version: 10
PDA version: A305FDDU4BTB3
CSC version: A305FODM4BTB3
Phone version: A305FXXU4BTA3
Product code: SM-A305FZKFINS
CSC country code: India
CSC sales code: INS
Carrier ID: XSG
Phone SN: RZ8M62XWKRN
IMEI: ????????????
HW version: MP 0.200
RF cal date: 20190621
Chip name: EXYNOS7904
Modem board: SHANNON327
Security patch: 2020-02-01
Boot Warranty bit: 1
SIM State: LOADED,LOADED
Checking Super user right... true
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... modem not supported
Searching server... OK
Checking available files... not found compatible file
Try downgrade modem if possible.

Done with Samsung Tool PRO v.42.1

Hello. Reflash your phone to this firmware and repeat.
https://sfirmware.com/ru/downloads-f...cusisoag86_fac