EDGE U0-6 Simplified Maintenance Manual
5 Software Upgrade
Issue 1.0 (2013-01-12)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
23
Figure 5-16
Download Success displayed
Step 7
Restore the phone to its factory settings and check whether the software version is correct.
See section 5.2 "Checking the Software Version" for details about how to query the software
version.
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5.6.3 Forcible Upgrade Guidance
If a phone cannot be powered on, forcibly upgrade the phone using the following method.
Install a battery to the phone, press and hold the volume keys, connect the phone to the
computer using a USB cable. The phone automatically enters forcible upgrade mode. Then
use the upgrade tool to upgrade the phone.
5.7 Troubleshooting Upgrade Failures
Table 5-2
Upgrade failures and solutions
Failure
Solution
(Computer) Failed to
detect the phone's
presence
3.
Check whether there is any other driver conflicting the USB
driver.
4.
Check whether the USB driver has been properly installed.
5.
Check whether the USB cable has been properly connected to
the computer and phone.
6.
Check whether the serial port settings are correct.
Failed to upgrade a
phone using a USB
cable
1.
Check whether the USB cable has been properly connected to
the computer and phone.
2.
Check whether the target version is higher than the original
one.
3.
Perform the upgrade again.