a405fn read core error

error reading codes for A450FN with a U2 modem/rom... no downgrade option that i can find.

solution?

Code:

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Operation: Read Codes via Server
 Selected model: SM-A405FN
 Software version: 36.8

 Model: SM-A405FN
 Android version: 9
 PDA version: A405FNXXU2ASG1
 CSC version: A405FNOXM2ASG1
 Phone version: A405FNXXU2ASF2
 Product code: SM-A405FZBDITV
 CSC country code: ITALY
 CSC sales code: ITV
 HW version: REV0.3
 RF cal date: 20190619
 Chip name: EXYNOS7904
 Modem board: SHANNON327
 Security patch: 2019-07-01
 Boot Warranty bit: 0
 SIM State: ABSENT,ABSENT
 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

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