Meadow FlashOS Error

I tried to flashOS on com port 3 and 4 but getting the error. I tried on 2 boards and the same error is happening

C:\WINDOWS\system32>meadow flash os
Device in DFU Mode, flashing OS
Flashing OS with C:\Users\nikol\AppData\Local\WildernessLabs\Firmware\Meadow.OS.bin
dfu-util 0.10

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2020 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
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Match vendor ID from file: 0000
Match product ID from file: 0000
Opening DFU capable USB device…
ID 0483:df11
Run-time device DFU version 011a
Claiming USB DFU Interface…
Setting Alternate Setting #0
Determining device status: state = dfuERROR, status = 10
dfuERROR, clearing status
Determining device status: state = dfuIDLE, status = 0
dfuIDLE, continuing
DFU mode device DFU version 011a
Device returned transfer size 2048
DfuSe interface name: "Internal Flash "
Downloading element to address = 0x08000000, size = 2097152

Erase done.

Download done.
File downloaded successfully
Transitioning to dfuMANIFEST state
Warning: Invalid DFU suffix signature
Device Flashed.
Connecting to Meadow on com4
Meadow.CLI.Core.Exceptions.DeviceNotFoundException: Could not find a connected Meadow with the serial number 305135773238
at Meadow.CLI.Core.DeviceManagement.MeadowDeviceManager.FindMeadowBySerialNumber(String serialNumber, ILogger logger, Int32 maxAttempts, CancellationToken cancellationToken) in C:\WL\Meadow.CLI.Again\Meadow.CLI.Core\DeviceManagement\MeadowDeviceManager.cs:198
at Meadow.CLI.Commands.DeviceManagement.FlashOsCommand.ExecuteAsync(IConsole console) in C:\WL\Meadow.CLI.Again\Meadow.CLI\Commands\DeviceManagement\FlashOsCommand.cs:76
at CliFx.CliApplication.RunAsync(ApplicationSchema applicationSchema, CommandInput commandInput) in \home\runner\work\CliFx\CliFx\CliFx\CliApplication.cs:147
at CliFx.CliApplication.RunAsync(IReadOnlyList1 commandLineArguments, IReadOnlyDictionary2 environmentVariables) in \home\runner\work\CliFx\CliFx\CliFx\CliApplication.cs:191