Well , rebug CFW have a built in webman .. All you've to do is to install rebug toolbox :
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INSTALL:
- First of all copy the PKG file to the root of your USB (no folders)
1: In the PS3 XMB go to Game menu
2: Select Package Manager
3: Select Install Package Files
4: Select PS3 Hard Disk
5: Install REBUG-TOOLBOX-02.02.02.pkg
6: Access Rebug Toolbox from XMB
And then you'll have to enable Cobra mode , which will subsequently enable "Webman" :
7: Scroll to 2nd column Selector, and select 3rd option Toggle Cobra Mode
8: Select Enable, and system will reboot with Cobra now enabled on the CFW.
Now after you restart your PS3 , you'll find a folder / group on the XMB called "Webman Games"
If you want the latest update of Webman-
MOD (** a modified version of the original Webman v.1.41 by deank **) you'll have to install the latest Webman-Mod updater :
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- just follow the same steps in installing rebug-toolbox
- Open Webman-mod updater v.x-xx-xx from xmb
- It will show black screen and then the ps3 will restart
- Voila

you are now on the latest webman-mod version
** To check your version , head to your Webman games -> Webman setup .. You'll find the version stated in the 1st line in the far west-north corner of your screen