[HTC Desire] How To Upgrade to Stock Android 2.2 Froyo
Ok, so we are all waiting for HTC to release their update to the HTC Desire, offering us the holy grail that is Android 2.2, otherwise known as Froyo. There is however, a way to get this right now, albeit without the Sense interface. Oh yeah, and you need to be rooted, thankfully I also have a guide for that too 
Follow the jump!
Updated 09/07/2010: Update to deFrost 2.0f
Updated 09/07/2010: New information for Orange branded phones
Ok, first things first, the disclaimer. It is very very unlikely that something will go wrong, nevertheless, $h#t happens, so please follow instructions carefully, unfortunately I cannot take any responsibility for anything that may go wrong following this procedure.
Next, you need to be rooted before you follow this guide. So follow this guide if you are not already rooted. Carefully read the bootloader bit. If your phone is not compatible just search the internet, there will be another guide out there for you.
Third, this guide as it stands now will install the deFrost Froyo Rom. We would be nowhere without the android rooting community, so please say thank you to richardtrip for creating this ROM.
!IMPORTANT! If you have an Orange branded ROM, READ ME
Ok, to use version 2.0 or above of deFrost (ROMS that require the flashing of a new radio), you basically need to purchase an unlock code:
- Pay to sim unlock your phone. I recommend Express Codes (e.g. This listing). £8.99 and you’ll have your phone unlocked inside 5 minutes.
- You need to apply this unlock code on a non-custom ROM:
- That means either a non-rooted ROM
- OR
- The rooted 2.1 ROM you flashed as part of my original root guide.
- This means unlock BEFORE applying any 2.2 ROM to your phone.
- If you have already flashed a 2.2 ROM, simply reflash the rooted 2.1 ROM you previously had, an easy way of doing this is to simply restore the nandroid backup you promised to make before applying any ROM.
- If you also flashed the new radio, then you will also need to flash this radio to go back to the radio you were previously running: 32.30.00.28U_4.05.00.11.zip
Of course if you are a cheap skate, you can simply flash the 1.8 ROM instead:
- Follow the guide, but do not flash the radio (skip step 12) and use the 1.8 version of deFrost ROM instead of the 2.0 or above version.
Right, lets see the guide (it’s really simple!):
- Make sure you are rooted, please.
- Download the latest radio update: 32.41.00.32U_5.08.00.04.zip
- Download the latest Full ROM: DeFroST_2.0f.zip
- Put both of these on your phones sdcard, or even better, download from your phone on this site
- READ #4 IMPORTANT
- I will update this guide with the latest versions of the above files, please do not mix and match unless you KNOW EXACTLY what you are doing. You will be able to update without this guide in the future anyway, its easy once you know how :p
- CARRY ON to #6
- Download the app called Titanium Backup from the market. Click Backup/Restore > Menu > Batch > Backup all user apps + system data. Wait for this to finish.
- Go to the android market on your phone and download the app called: ROM Manager
- Open this app, click Flash Clockwork Mod Recovery, select HTC Desire.
- Press OK once you get the successful message
- Still in the app, click Install ROM from SD Card
- Choose the 32.41.00.32U_5.08.00.04.zip you downloaded earlier.
- **IMPORTANT* Select Backup Existing ROM. This will provide you with an exact backup of the current state of your phone (A Nandroid backup) **IMPORTANT*
- Press OK and sit it out.
- When the phone loads up again, open up ROM Manager and click Install ROM from SD Card
- Select the DeFroST_2.0f.zip you downloaded earlier.
- Try NOT SELECTING Wipe Data and Cache first, if you run into problems then redo step #16 and select Wipe Data and Cache
- Press OK and sit it out again.
- See #21
- DONE!
I told you it was easy right? In the future simply download the latest ROM, or any compatible ROM,place on your sdcard, and flash using ROM Managers install ROM option. Just promise me you will backup your current before doing so ok?
What next then?
Black notification bar
- Download this file: DeFroST_2.0_Black_Status_Bar.zip and place it on your sdcard.
- Open ROM Manager app on your phone.
- Click Install ROM from SD Card
- Select the DeFroST_2.0_Black_Status_Bar.zip file.
- Press OK and wait until the phone boots back up
- et voila!
- If you want to restore the old notification bar, simply reflash the main ROM
Comfortaa Fonts (Replace your system font with the muych better looking ones)
- Download the fonts file: Comfortaa_font-signed.zip and place on your sdcard
- Open ROM Manager app on your phone.
- Click Install ROM from SD Card
- Select the Comfortaa_font-signed.zip file.
- Press OK and wait until the phone boots back up
- You got the hang of it now right? :p
- If you want to restore the old font, simply reflash the main ROM
Things to bear in mind.
- If you used the apps2sd method in my original root guide (or any other guide), and your apps are currently stored on an ext partition on your sdcard, then you don’t have do to anything different regarding installing apps. The phone will say your apps are stored internally, but they will actually be stored on your sdcard in the ext partition as per normal root.
- Personally I prefer this way, rather than the new way of storing apps on sdcard. The new way app devs have to allow you to store apps on sdcard, and it all gets messy. The old rooted way is better (This is why I am not giving any info on how to use default froyo a2sd)
- Always ALWAYS do a nandroid backup (Backup Existing ROM) before flashing any new ROM, you will thank me if it ever goes wrong.
Take care, and good luck Q/A below!
Source: http://nimbu.amorvi.com
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