NOTE: The procedure i am showing is for Samsung Galaxy Mini (GT-S5570). Dont try this on any other phone (u can brick it)
1. Download the ClockworkMod Recovery kernel, Odin v4.38, and TASS.ops
These are the links from where u can download
ClockworkMod Recovery file
Odin v4.38 for Galaxy Mini
TASS.ops for Galaxy Mini
2. Open Odin v4.38.
3. Power off the Galaxy Mini and connect the microUSB to the computer.
4. Boot the Galaxy Mini into download mode by holding Volume Down, Home, & Power.
5. Connect the microUSB cable from the computer to the Galaxy Mini.
6. Wait for Odin to recognize the Galaxy Mini (the box in the top left will turn yellow and say (COM #) where # is a random number).
7. Ensure One Package is checked right below that box.
8. Select TASS.ops by pressing the OPS button.
9. Select tass-recovery-cwm.tar by pressing the One Package button.
10. Press Start and wait until the phone reboots.
11. The Galaxy Mini now has the ClockworkMod Recovery installed. Continue to the next section.
NOW we have to install a Custom ROM on our phone. For that you need to download it first (it will be a .zip file)
Place the CyanogenMod rom .zip file on the root of the SD card:
1. Boot the phone into recovery mode.(By pressing Home button while switching it ON)
2. In recovery menu choose "Install zip file from Sdcard".
3. Installation will start when u will browse to the file and select it.
4. Phone gets restarted.
5. Again goto Recovery menu by pressing Home button while switching it ON.
6. Go to Advanced
7. Choose "Wipe dalvik-cache"
8. Now go to "Mounts & Storage"
9. Choose "Wipe /cache"
10. Reboot your phone.
Now ur Android device is ready to boot into ur own custom ROM , keep ur spirits up and start developing ur own ROM and flashing ur phones. The procedure is same for other android phones but just the files are different..
