Hello,
FIT mode - means you need a wireless controller to manage the AP, usually this type of AP deployment is used when there are multiple APs in your WLAN that needs to work together to establish a wireless network. The controller manages all APs in the same time.
FAT mode - means your AP can work as standalone, a controller is not needed, similarly with a home router that is providing AP in your house for example.
So if you would like to manage only one AP without a controller you should make sure you use the FAT version.
I would guide you through the next steps required to open web management for your AP.
1. Check whether AP is running the FAT version. Use display version command in CLI to check this:
<Huawei> display version
Huawei Versatile Routing Platform Software
VRP (R) software, Version 5.130 (AP5030DN
FAT V200R006C10)
2. If you don't run the FAT version, certainly you will need to make a change from FIT to FAT version.
First find the latest V2R6 software version - here there is the link for AP5030DN-FAT-V200R006C10SPCa00.
http://support.huawei.com/enterprise/en/software/22151900-SW1000203137Then after you download the software, please follow the guide to change from FIT to FAT. See chapter 6:
http://support.huawei.com/enterprise/en/doc/EDOC1000161502?idPath=7919710|21782164|21782201|22318528|22039835
3. If you have the FAT version already running or you managed to change from FIT to FAT, you will need to open Web management access for AP. Please refer to the guide:
http://support.huawei.com/hedex/pages/EDOC1000088094DEE1225H/07/EDOC1000088094DEE1225H/07/resources/dc/dc_wlan_webhelp_first_0003r6c10.htmlNote that it's not required to upload a web.zip file in AP flash to start the web management, that part is optional.
Cheers!