developed a product using the 9160. Now I need to upgrade the SDK from 1.2.0 to 1.9.0. During the test, I found that the servers that could be connected normally in the past could not be connected in the 1.9.0 version of the SDK. But what's more strange is that some devices can be connected normally, while the devices that failed to connect report the following errors:
00> [03154935] <wrn> download_ client: Failed to resolve hostname aug-fm-files-cn.oss-cn-shenzhen.aliyuncs. com on IPv4
00> [03154957] <inf> E2: [15:21:10:281]..dl_ transfer_ start>>download_ start() failed, err -118.
I also made another test. The firmware of the sdk 1.2.0 can be connected to the device with the problem, regardless of whether the modem fw version is 1.2.0 or 1.3.1. However, the connection to the sdk 1.9.0 version failed. Why?
