WX3508H升级问题

你好 我想把我的WX3508H升级到最新稳定版本  但是我不知道哪个是稳定版本  请帮我提供一下  谢谢

这是我的当前版本

<AC(WX3508H)>display version
H3C Comware Software, Version 7.1.064, Release 5272
Copyright (c) 2004-2019 New H3C Technologies Co., Ltd. All rights reserved.
H3C WX3508H uptime is 22 weeks, 6 days, 14 hours, 49 minutes
Last reboot reason : Power on

Boot image: flash:/boot.bin
Boot image version: 7.1.064, Release 5272
  Compiled May 29 2019 16:00:00
System image: flash:/system.bin
System image version: 7.1.064, Release 5272
  Compiled May 29 2019 16:00:00


Slot 1
Uptime is 22 weeks, 6 days, 14 hours, 49 minutes
with 1 1000MHz Multi-core Processor
2048M bytes DDR3
16M bytes NorFlash Memory
1024M bytes NandFlash Memory

Hardware Version is Ver.A
CPLD Version is 003
Basic Bootrom Version is 1.07
Extend Bootrom Version is 1.12
[Subslot 0]WX3508H Hardware Version is Ver.A