I'm wondering if the EFS on your phone is now corrupted. just now find the EFS for flash with Download mode.
Also I'm done another phone today's.
Code:
Chimera Mobile Phone Utility version: 24.13.1846 @ 2020-03-26
Printing phone history
Patch Certificate
3/26/2020
12:31:10
PM
Repair IMEI
3/26/2020
11:53:43
AM
Repair IMEI
3/26/2020
11:35:42
AM
Patch certificate started
Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-A307FN
Sales Code: DBT
Country Code: Germany
Timezone: Africa/Johannesburg
Android Version: 9 [PPR1.180610.011] [SDK 28]
Build Date: Wed Nov 27 16:56:01 KST 2019
PDA Version: A307FNXXU2ASKA [november 2019, revA]
Phone Version: A307FNXXU2ASKA [november 2019, revA]
CSC Version: A307FNOXM2ASKA [november 2019, revA]
Product Code: DBT
HIDSw Version: A307FNXXU2ASKA/A307FNOXM2ASKA/A307FNXXU2ASKA/A307FNXXU2ASKA
Board Platform: EXYNOS5
Modem Platform: SHANNON327
Serial Number: RZ8MA03EAVW
Imei: 356
Unique Number: CDU00E2E55FB296
Connections: AT,MTP
Battery Status: 3.85V (49%)
Network Type: GSM
SIM Status: LOADED
Multisim Config: SS
Knox Version: v30
Warranty Bit: 0
Security Patch: 2019-11-01
Data Encryption State: encrypted
Preparing...
Checking root access.
The phone is rooted by: 20.1:MAGISKSU
Reading data...
The operation is in progress. Be patient! Do NOT disconnect the phone!
Patching certificate...
Checking root access.
About 30-90 seconds after the phone starts, the signal strength indicator turns OFF and then turns ON again after a few seconds.
You can check the status of the imei using: *#0011#
The patchcert can be removed by repeating the process.
If a new firmware is used, the patchcert process must be repeated.
Successfully finished.
Finished at local time: [03.26.20 14:32:28]
WorkID: 92585382