Warning: What may happen to your phone while following these steps is NOT my responsibility. You’re the one doing them, not me. So if in case you did something wrong and ruined it, point your blaming finger on no else but yourself. You have been warned.

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Right.. for this tutorial, you’ll be needing:

- fully charged W810i

- PC ofcourse

- USB data cable

- SETool Lite (freeware and easily downloadable)

- patches that you’d want to put in your phone

Steps (please see the screenshots. use as basis and mind the numbers)

- Turn off your phone

- Choose your phone model from the drop down (1)

- choose the interface and speed (2) i suggest that you leave it as it is though

- click the browse button for Misc files and browse to the location of the .vkp patch you want to install (3)

- press Write Script. NOTE: Be careful in pressing the buttons. As you can see, the Write Script is directly below the Write GDFS, which is why they call SETool a landmine. If you made a mistake and clicked the Write GDFS, your phone is DEAD.

- it will now prompt you to Hold the C button and plug the cable.

- upon successful connection, it will prompt you again to Detach the cable, remove the battery, put it back again and to press the Ready button after. You will be instructed again to hold the C button and plug the cable back.

- after a few seconds, a message box will pop up that says something like ‘click Yes to remove and No to apply’.. press NO.

- after another few seconds, another message box will appear, saying that some values differ. click Yes.

- wait till SETool displays the elapsed time.. that means that patching is done and you can now unplug your phone and restart it.

That’s it! This same procedure applies for all patches and for all models.

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Additional

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Right, after this procedure, only three things can happen. Those are:

(1) your phone will start back, patch is successfully installed and is working. In this case, we should congratulate ourselves because we followed every step cautiously and made sure everything fits before actually proceeding.

(2) your phone will start, but the patch didn’t do anything at all. nothing special. This might be because, you either pressed ‘Yes’ instead of ‘No’ when SETool prompted for action, hence the patch was not applied. In that case, you should repeat the steps, this time, click No.

OR the patch is not compatible with your phone’s firmware. it’s good that it did not ruin the phone in any way at all. It just didn’t work. You should be thankful.

(3) Your phone will not restart - it just blinks a white screen. This happened to me more than a couple of times too, so don’t fret. Anyway, this one might be due to the fact that the patch you applied is not meant for your current firmware.  Most patches out there are for R4EA031 Generic MAIN, although some patches have been ported (rewritten) for other firmwares too. So, if it didn’t work, it just simply means that your firmware is not supported.

You can either:

(a) try what I did, which is update the firmware through Sony Ericsson’s Update Service. Be careful though, especially for DB2020 phones, because Sony Ericsson, in it’s attempt to stop modders from hacking the phone, will update not only your firmware but the encryption (CID49 to CID52 to CID53). If that happens, you get back your phone, but you won’t be able to mod it again, ever. SEUS is safe for DB2010s like W810i and others.

(b) reflash your firmware. This is last attempt, especially if the above mentioned is not a good resort. As for flashing, you can refer to this post I wrote about the topic.