It’s quite simple actually, but note this will delete the database altogether – there is currently no way to remove individual words;

Go to Settings > Applications > Manage Applications > Touch Input  and click on “Clear Data”.

1 ) First, mount the /system partition, you can either do this using one of the many file managers on the phone that can mount filesystems or execute the following adb command from the /tools folder of the Android SDK;

d:\AndroidSDK\tools\adb remount (your AndroidSDK path will likely be different)

2 ) Next, fire up an SSH session to your handset (I recommend using PuTTY). Username is ‘root’, the password can be found in Settings > About Phone.

3 ) Enter SU mode

# su

4 ) CD to the correct directory

# cd /system/init.d

5 ) Disable compcache

# vi compcache.sh

Press “i” to go to insert mode
Comment out the following lines (prepend with a ‘#’);

/system/xbin/insmod /system/lib/modules/ramzswap.ko disksize_kb=131072
/system/xbin/swapon /dev/block/ramzswap0
echo “10″ > /proc/sys/vm/swappiness

So you now have;

#/system/xbin/insmod /system/lib/modules/ramzswap.ko disksize_kb=131072
#/system/xbin/swapon /dev/block/ramzswap0
#echo “10″ > /proc/sys/vm/swappiness

Press ‘Esc’ then type ‘:x’ (colon then x) to exit and save the file.

6) Create your custom memory config file in init.d, you should already be there

# vi custmem

then enter the following

#!/system/bin/sh
echo “1536,3072,4096,21000,23000,25000″ > /sys/module/lowmemorykiller/parameters/minfree

Press ‘Esc” then type ‘:x’ (colon then x) to exit and save the file.

7 ) Make the custmem file executable

# chmod a+x custmem

8 ) Reboot the phone

Check the source link below for details of what each of the memory settings actually mean – the defaults in step 6 above have been proven to give the best level of performance.

If you want to try the settings before having them used permanently, simply (from PuTTY or by using adb shell) type;

echo “1536,3072,4096,21000,23000,25000″ > /sys/module/lowmemorykiller/parameters/minfree

This will put the settings into use temporarily and will be lost when you reboot – this will also allow you to tinker with settings in order to find a set that works for you without permanently saving them.

Source.

1 ) Firstly, ensure you are logged in to Google Calendar from the browser you are viewing this page in

2 ) Next, visit this page on the Telegraph.co.uk website

For the purposes of this example, we are going to use the Barclays Permier League feeds, though the principle for the other sporting feeds is exactly the same

3 ) Click on the Football link on the left hand side, then on Premier League

At this point, you have two options, you can either have the feed for all Premier League games (step 3a) or the feed for just your team (step 3b)

3a ) To import the feed for all upcoming Premier League games – click on the “Download to Outlook” button on the right hand side, then click on the “Add to Google Calendars” link. You will then be directed to your Google Calendar account and prompted to accept the new feed

3b ) To import the feed for a particular Premier League team – click on the name of your team from the list on the left hand side, then click on the “Download to Outlook” button on the right hand side, then click on the “Add to Google Calendars” link. You will then be directed to your Google Calendar account and prompted to accept the new feed

4 ) Once you have added the relevant feed(s) to your Google Calendar, they will be available for selection on your handset, for the HTC Hero, the procedure is as follows (this will be different for other handsets/models and is for reference only)

5 ) Open the Calendar app on your phone, press the menu key and select “Calendars”. You will then be presented with a list of available calendars – if your newly added feed doesn’t appear there, ensure you do a “Sync” from your handset to update the list of available feeds.

2 ) Gather the required files (Main “update.zip” package (Mandatory) (mirror)| Enhanced add-on pack (optional) (mirror) | WaveSecure add-on pack (Optional but recommended) (mirror) | Boot sounds add-on pack (optional – simply restores the android sound during boot (mirror). For details of what is in the add-on packs, see this thread on Modaco.

3 ) Ensure you have at least 400meg of free space on your SD card in order to perform a backup (the backup will allow you to return the phone to it’s previous state if anything goes wrong or you simply don’t like it).

4 ) Put all the files on the root of the SD card. I suggest you rename the first/main package to “update.zip” (if your Windows install shows file extensions, the rename should be “update.zip” – if you have known extensions hidden, the rename should just be “update”) as there is an option in the bootloader to directly apply “update.zip”. DO NOT UNZIP THE FILES, SIMPLY COPY THE FILES TO THE ROOT OF THE SD CARD.

5 ) Perform a backup (PLEASE DO THIS!!) – shut down the phone, then turn it on again holding the “Home” and “Power” keys until the bootloader appears. Using the trackball, select the “Perform a Nandroid Backup” option and wait until it completes. This should take about 5 minutes. The files will appear on the SD card under /nandroid/backups/

6 ) Flash the main “update.zip” – simply select the “apply sdcard:update.zip” option and wait. This bit should take between 5-10 minutes. When it’s done, select the “reboot system now” option.

7 ) The first boot into the new version will take a while (don’t panic at this bit, the phone will sit at the shiny HTC animation for up to 10 minutes whilst it sorts itself out).

8 ) When you’re finally back at your home screen, everything should look as it did before you flashed the update. If you check your applications folder they should all be there including some new ones (like WifiTether). If you go to Settings > About Phone, you should see the build number and possibly a “reboot” message next to the SSH password text – next time you reboot a unique password for the SSH server will be generated.

9 ) Turn off the phone and boot back to the bootloader screen and apply any of the other updates you downloaded (i.e. WaveSecure). Select the “apply any zip from sd” option and choose which update to apply – repeat process until you’ve applied all the optional updates then reboot the phone again.

10 ) That’s it! You now have the latest Android 1.5 build, some nice new toys and a potential speed increase on your previous build.

You should be able to access the SSH server using something like PuTTY

The address is the IP address assigned to the phone
The port is 2222
The username is root
The password is found on the Settings > About Phone screen (next to the build number).

Source: 1

Warning : Following this guide could in theory brick your phone. This guide is written using my own experience of following instructions from various sources and is specifically written for the Orange-branded Hero (firmware version 2.73.61.5). DO NOT follow this guide if you do not understand the risks and/or your firmware version does not begin 2.73.

Part 1: Prepare your system and phone for some fun
1 ) Download and unpack the Android SDK to the root of one of your drives (c:\ for example). You should then have c:\AndroidSDK\…

2 ) Install the HTC adb drivers – there are two ways to do this – install them from the “usb_driver” folder in the AndroidSDK package or install HTC Sync from HTC. 64bit Windows 7 users have a bit of leg work to get drivers installed which for now is outside of the scope of this guide.

3 ) Check that your computer see’s your Hero…connect the phone to the computer using the USB cable and either manually install the drivers or run HTC Sync from the above step. Once the drivers are installed, open a command prompt and CD to the location where you unpacked AndroidSDK (i.e. c:\AndroidSDK). CD into the “Tools” directory under “AndroidSDK“. At the command prompt, type “adb devices” (so depending upon where AndroidSDK is located that would be c:\AndroidSDK\tools\adb devices”. If the drivers are working, your device (starting HT) will be listed, if nothing is listed, something went wrong, check device manager for any uninstalled drivers, fix and try again.

4 ) Download the superuser package and extract it to the “Tools” directory under “AndroidSDK” (the package contains Superuser.apk and the su binary required later).

Part 2: Installing the custom recovery image

Next you need to replace the recovery image with one which allows access via the adb interface (HTC patched the exploit in the current Orange firmware which is why this is necessary – you can backup the original one though so don’t panic).

Best to use a blank SD Card for the next bit…

5 ) Download the patched recovery image (mirror), extract it and put it in the root of the SD Card (cm-hero-recovery.img)

6 ) Download and install Flashrec on the device. When done, open the “Recovery Flasher” from the programs menu. Clear whatever text is in the text box and click on the “Backup Recovery Image” button. This will backup the current recovery image (and can be restored should the need arise).

7 ) Once you’re happy the backup image has been created (check the SD Card for the “recovery-backup.img” file), go back to the “Recovery Flasher” and in the text box enter “sdcard/cm-hero-recovery.img” and then click on the “Flash Custom Recovery Image” button and wait for the process to finish.

You phone now has a “useful” recovery image (i.e. one that you can use to root your device). To test the flash has worked properly, turn the phone off, then turn it back on again holding “Power” and “Home” together for a couple of seconds until the recovery menu appears (black background and green menu options).

Part 3: Rooting the device

With the phone sat at the recovery console (as described above) and connected to your computer with the USB cable, do the following…

8 ) Open a command prompt (or continue from the previous one) to the “Tools” folder of the “AndroidSDK” install. Double check the phone and computer are talking by typing “adb devices” – you should get the same output as in Step 3, if not, unplug the cable and replug to kick the device recognition.

9 ) Type the following commands in this order:

1. adb shell mount /system
2. adb push su /system/bin/
3. adb shell chmod 4755 /system/bin/su
4. adb push Superuser.apk /system/app/
5. adb shell reboot

If all goes well, each command will execute without errors (for the two “push” commands you will get file transfer stats), the final command will reboot the device.

After all this, your phone will be rooted (properly), and if the desire takes you, you can also install custom ROMs from MoDaCo and others using the custom recovery menu you’ve installed.

This may look like a massive amount of effort, but it’s literally a 5 minute job from start to finish and if you need to revert, there is a backup on your SD Card which you can flash back using the “Recovery Flasher” program.

Sources: 1 | 2

See also: Installing a custom ROM