For the 2.00/2.01 downgrader, it´s not HEN but the eLoader required.
eLoader does NOT come bundled with the downgrader, therefore you need to download and install it separately.
Download:
- 2.00/2.01 easy downgrader
- the latest eLoader
- 1.50 Update EBOOT.
The first two available from
http://www.noobz.eu.
Once eLoader is installed (and also the other two), run eLoader first.
Running eLoader : via TIFF mode
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- Make sure you have a custom wallpaper set. Any image will do.
- Use the PSP's built-in photo viewer to open the "eLoader 099"
folder, this will cause the loader to start. If your PSP
hangs at this point, then try the following:
- check your firmware version. This loader is for v2.0 -
v2.71 ONLY.
- check that you have the loader files in the correct
place (see above)
- turn your PSP completely off, then back on again.
The loader works best on a freshly-rebooted PSP.
- try setting a custom background - some people have
reported that it works better if you use a custom
wallpaper (any image).
- try 'touching' the TIF image file : see 'fixing
up the file times' below.
Once eLoader is executed, to downgrade, you need to select the 'set to v1.00' option (the Circle button).
This will fake your PSP to version 1.00. Basically yor PSP will believe that it´s a 1.00 PSP so it will let you run the v1.5 Update EBOOT, directly from your PSP's Game menu.
That´s it. You can then proceed to install CFW 3.55 M33.
Again, all this information is available in the instructions (Readme.txt files) from both, the downgrader and the eLoader. So please make sure you read them thoroughly before attempting anything.