A few days ago, customers reported that the b315s-936 firmware push update, version 21.329.01.01.1394, should be a correction to the previous version of 21.329.01.00.1394.
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Update push information
Because many Huawei updates are OTA pushes, offline downloads are not available, so access is difficult. There is only a test sample of B315s-22 on hand, and it is not possible to directly monitor the update online. Therefore, it is considered to obtain firmware by analyzing the structure of the download link.
The first is to analyze the upgrade configuration XML file in the previous version of the firmware, or to find information about the upgraded server address and so on.
Again, view the device information of the device, convert it, POST to the upgrade server, and
finally, combine the download address by returning information from the server.
XBecause many Huawei updates are OTA pushes, offline downloads are not available, so access is difficult. There is only a test sample of B315s-22 on hand, and it is not possible to directly monitor the update online. Therefore, it is considered to obtain firmware by analyzing the structure of the download link.
The first is to analyze the upgrade configuration XML file in the previous version of the firmware, or to find information about the upgraded server address and so on.
Again, view the device information of the device, convert it, POST to the upgrade server, and
finally, combine the download address by returning information from the server.
There are many Chrome Poster
POST tools. This test uses Chome Poster. The interface is simple and friendly, and it is convenient to use. Put the upgrade server address analyzed by the firmware into the URL, put the device information into the Content Body, and then click POST to get the
POST tools. This test uses Chome Poster. The interface is simple and friendly, and it is convenient to use. Put the upgrade server address analyzed by the firmware into the URL, put the device information into the Content Body, and then click POST to get the
response from the server. The server returns the information through the server. You can see that the firmware update creation time should be 2018.11. .21, and the download URL, on the basis of a slight adjustment, you can get the full address:
download link Normal
download link Normal
winhex view download firmware Open the downloaded firmware in winhex, the firmware version and time can be seen on the right side.
The earliest version is known. The earliest version of B315s-936 is 21.313.03.01.1394, and the compilation time is 2016.02.19. After that, 7 updates have been issued and the
previous 6 update history. According to the above figure, the first six updates can be seen. This is the 7th time.
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