HUAWEI VNS-L21C432B381 Software Upgrade Guideline
HUAWEI VNS-L21C432B381 Software Upgrade Guideline
HUAWEI VNS-L21C432B381 Software Upgrade Guideline
HUAWEI
VNS-L21C432B381
Software Upgrade Guideline
Contents
1 VERSION INTRODUCTION ....................................................................................................... 3
2.2 BACKUP YOUR PRIVATE DATA AND GET THE RIGHT UPGRADE METHOD .................................... 3
1 Version introduction
VNS-L21C432B371
VNS-L21C432B335
VNS-L21C432B161
2 Upgrade Precautions
Make sure that the MICRO SD card is available and can be read and write.
2.2 Backup your private data and get the right upgrade method
The upgrade process will erase the user data, and please backup your data before
upgrade.
If your current software was android 6.x version, you must update the transfer
If your current software was android 7.0 version, you should backup your data before
upgrade.
You can get the android version number as chapter 5.1- Check the version.
There are two software package: main package and vendor package.
3 Upgrade introduction
There are two methods to upgrade: normal upgrade and force upgrade.
Normal upgrade needs to start the handset and enter the System Update module. Force upgrade is
justused when the handset can’t boot up or can’t enter the idle screen.
4 Upgrade operations
First refer the current android version number as chapter 2.2 to check whether it need
Step 3. Copy the entire dload folder (with UPDATE.APP in it) to the root directory of the Micro SD
Insert the Micro SD card into the handset and power on. After entering call
Step 4. When the progress bar stop, the phone will restart automatically.
Step 1. A MICRO SD card of 8GB or more should be available. The MICRO SD card
Step 3.Copy the entire dload folder (with Vendor package UPDATE.APP in it) to the root directory
Insert the Micro SD card into the handset and power on. After entering call
Step 4.When the progress bar stop, the phone will restart automatically.
enter: Settings -> Advanced settings ->Backup & reset ->Factory data reset ->Reset
Step1. Repeat steps 4.1, ensure your DUT update success again
Attention:
This step is optional, just after the 4.1 Normal upgrade cannot be successfully,
Then you can use this upgrade instead of the normal upgrade!
Step 1. A MICRO SD card of 8GB or more should be available. The MICRO SD card
Step 4. Copy the entire dload folder (with UPDATE.APP in it) to the rootdirectory of the
Step 5. Make sure your handset is power off. Insert the Micro SD card into the handset. Press
the VOLUME UP and VOLUME DOWN key, and then press the POWER key to power on
Step 6. When the progress bar stop, the phone will restart automatically.
Tips:
5 Upgrade validate