I signed in for around 10 seconds a week ago and got banned.

So this tutorial will teach you how to install rebugs 4.30.2 REX custom firmware and then spoof the firmware to 4.40 so you can go online and data transfer to and from your 4.40 OFW ps3.

So first we're going to install Rebugs 4.30.2 REX custom firmware
Does this mean I'll be on 4.30 firmware and won't be able to go back to 3.55? no you can go back to 3.55 anytime you want with REBUG 3.55.x REX EDITION on a QA enabled PS3 or with the ’999' DOWNGRADER if QA was NOT enabled.

make a backup of your NOR/NAND. Before you install this you should first make a backup of your NOR/NAND in case anything goes wrong.
To do this install latest version of multiMAN, plug in a FAT32 formatted USB flash drive into the right USB port, launch multiMAN under Games and go to mmOS->Select any file->Open in HEX viewer->[SELECT]->[START]->UMP LV2(NO)->UMP LV1(NO)->UMP FLASH(YES).
Or you can install Rebug toolbox and underneath the "Utilities" menu choose "EXPORT FLASH TO FILE: Backup your current NOR/NAND to file on dev_usb000."
You must login or register to view this content. (download the multiMAN BASE (CEX) v04.20.00)
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Download the custom firmware. Go to this link and download Rebugs 4.30.2 REX EDITION custom firmware at the bottom of the page: You must login or register to view this content.
You can install this firmware over any 3.55 OFW/CFW/MFW or the same or lower firmware version CFW with spkg sig check patched or any firmware version CFW with spkg sig check patched and QA enabled.

Put the custom firmware on your USB. Rename the custom firmware .PUP file to PS3UPDAT.PUP and put it inside this directory on your USB PS3 > UPDATE > PS3UPDAT.PUP.

Disable your internet connection. This is just so you don't accidentally update to the latest 4.40 OFW and get stuck there. Go to "Settings", then "Network Settings" and choose "Disable" on the "Internet Connection" option.

Put your ps3 into recovery mode. Put your ps3 on standby so the red light is still on and hold your finger on the on button until it turns off again. Then take your finger off and hold it back on until you hear a single beep and then a double beep. When you hear the double beep take your finger off and your ps3 will go into recovery mode.

Install the custom firmware. Six options will appear on screen make sure there isn't a disc in your ps3 then choose the sixth option "System Update".
Now it will tell you to plug your USB into your ps3 with the custom firmware inside the PS3 > UPDATE > directory, plug your ps3 controller into your ps3 via the USB cable and then press start and select at the same time.
After you press start and select just follow the onscreen prompts and install Rebugs 4.30.2 REX custom firmware.

Install the 4.40 spoofer. Download the Rebug Update Package 0.1 (4.30.x) from here: You must login or register to view this content. Put it on your USB, Install it from Package Manager, launch it under Games and follow the on screen prompts your PS3 will reboot if needed when finished. Once your PS3 has rebooted you can delete the Rebug Update Package from your XMB as it is not needed.
Now go under "Game", select "Package Manager", "Install Package Files", "PS3 Hard Disk" and then click X on "REBUG-TOOLBOX-2.01.02.PKG".
Now launch Rebug Toolbox, go under "Selector" and change "System Mode" to "Rebug". Your PS3 will restart and then it will be spoofed to version 4.40 so you can go online and data transfer to and from a 4.40 ps3.
When online on PSN be very careful because you can get banned very easily. Go to this thread for more info on how not to get banned You must login or register to view this content.

How to uninstall Rebugs 4.30.2 REX custom firmware. Rebugs 4.30.2 REX CFW can be uninstalled with REBUG 3.55.x REX EDITION on a QA enabled PS3.
Go to this link and download the "REBUG 3.55.4 REX EDITION" custom firmware at the bottom of the page: You must login or register to view this content.
Now Put the custom firmware on your USB and Disable your internet connection.
Then start Rebug Toolbox and under "Utilities" change "Toggle QA Flag" to "Enabled".
Then Put your ps3 into recovery mode and Install the custom firmware.
Once that has installed you should be able to install 3.55 official firmware and your 3.55 will be back to normal.
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I hope you managed to do this and I have made it clearer for those of you who were a bit confused on how to do this.

If any of the information in this post is wrong or unclear please let me know in the comments.

TBH I don't care about any haters I'm just making this because I was a bit confused on how to do it so I'm just making it easier for anyone else.