Huawei router console freeze

Hi All,

I'm trying to configure a Huawei AR500 LTE Router using the console

After the boot, the console just freeze at "Press any key to get started"

The doc says "Remember to disable the flow control (RTS/CTS)" --> https://support.huawei.com/enterprise/en/knowledge/EKB1000049192

But i already checked that it was disabled (I never use it), using Putty and also SecureCRT, (tested with 2 PCs)

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Any suggestions ?

Thanks