Instructables
Picture of How to hack Nokia 5800 and others?
Don't you wanna install unsigned games without any fuss every time?
Let's hack Your phone and voila! Install anything!
NB! Flashing custom firmware is better than this "fuss" ;)
You will need:
ROMPatcher+ 3.1: http://www.symbian-toys.com/rompatcherplus.aspx
TM Mobile Security: http://db.tt/ZkVZLxsh
tmquarantine.zip : http://db.tt/Pxzjay98
X-Plore (any version)
Some time
I DON'T HAVE THIS PHONE ANYMORE SO THERE IS NO FULL(i can't check what i've sayd) SUPPORT FOR IT ANYMORE!
 
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Step 1: Ready,

Picture of Ready,
Extract tmquarantine.zip to phone memory(with X-Plore, not File Manager)
There should be directory C:\tmquarantine\(files)
Install TM_security.sis
Press options, then click quarantine files and restore all files
It "restores" them to C:\sys\bin

Step 2: Set,

Picture of Set,
Now extract Rompatcher zip file and install Lite version
open it after installation and accept all patches
Now it's ready!

Step 3: GO!

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So, let's cleanup!
delete any tmquarantine and rompatcher zip files(if they was in your phone)
uninstall TM Security
Never uninstall ROMPatcher+, patches lose teir effect after reboot, re-patching needed
HAPPY USING! :)