1.Please make sure that your CNH diagnostic tool can be found on laptop device manager
2.When your machine is connected to the diagnostic tool and computer, start the engine to power the device, then run the software, you will be prompted to upgrade the firmware
3.During the upgrade process, please ensure that your machine continues to power the tool. If the power is interrupted during the upgrade, the tool will be damaged.
4.Wait for the upgrade process to complete
5.During the upgrade process, these two lights will flash continuously.
6.After the upgrade is complete, click OK on the following prompts
7.Then the tool can work with cnh est software
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