Huawei U8100 User Guide - Manual (Page 162)

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Managing Your Mobile Phone
is correct. Back up important infomation such as the contacts,
email messages, files, and other messages saved to your
mobile phone.
Preparing for the Upgrade
1. Download the upgrade file from the appropriate websites.
2. The file you download will be compressed. Use the unzip
software on your PC to decompress the upgrade package.
The upgrade package has a folder structure — be careful you
do not change it. This folder is called dload — do not rename
it, either.
3. Use the USB cable to connect your mobile phone to your PC.
4. Copy the folder structure to the main directory (root directory)
of your microSD card.
5. After you have copied the file to the microSD card, disable the
USB mass storage feature.
Upgrading the Software through the microSD Card
After copying the update files to the microSD card, do the
following: