i just downgraded andriod 10
Operation: Repair
Selected model: SM-A307FN
Software version: 44.15
Waiting ADB device... OK
Reading phone info...
Model: SM-A307FN
Android version: 10
PDA version: A307FNXXS2BTE3
CSC version: A307FNOJM2BTE2
Phone version: A307FNXXS2BTE1
Product code: SM-A307FZKSXFA
CSC country code: SOUTH AFRICA
CSC sales code: XFA
Carrier ID: XFA
Phone SN: RZ8MC0VLA5K
IMEI: 351xxxxxxxxxxxx
HW version: MP 0.1B0
RF cal date: 20191213
Chip name: EXYNOS7904
Modem board: SHANNON327
Security patch: 2020-06-01
Boot Warranty bit: 1
SIM State: ABSENT
Checking Super user right... true
Root version: 3.19:EFTSU
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... OK
Reparing... OK
Rebooting phone... OK
