Dear Chanphirun! Did you say the stand-alone DC upgrade tool? Currently, the DC tool can be downloaded only with the Web LCT. To use the DC tool of the latest version, download the Web LCT tool and start the DC tool as shown in the following figure.

Download link:
https://support.huawei.com/carrier/navi?coltype=software#allProduct=true&col=software&path=PBI1-7275726/PBI1-22894951/PBI1-4169194
Thank you.