How to use Jetpack4.2 on Tx2

When I install sdkmanager and run it
it tell me that “OOPS, No SDKs are available for your account”
what should i do to get new version jetpack? buy a jetson nano?

Hi liyunlllyyy,

Please refer to relevant docs of NVIDIA SDK Manager:
Instructions to Download and Run SDK Manager
Instructions to Install Jetson Software with SDK Manager

If issue still reproduce on your end, please package the ~/.nvsdkm/ folder on your host and upload for us to investigate.