Greeting. Here are some resources I used to root and update this phone. I cover everything from: rooting, installing kernel with CWM Recovery, using CWM to flash custom roms, and restoring the device to factory stock. You need to root the device first to perform any of the steps afterward.
>> USB / ADB DRIVERS:
This is for Windows only. You'll need it to get your phone recognized while plugged in as ADB and Download Mode. To get the driver, go to official Samsung Infuse 4G page, click on the "Downloads" tab on the page. Download the smaller file titled "Device(Install),User Guide (Software) (ver.5_2_0_2)".
If you still have issues getting drivers detected, try this Galaxy S driver package. Another alternative, while the phone is connected to the PC, on Windows, go to Control Panel -> Windows Update, and click on "Check for updates", it might be able to find the proper driver.
>>> ROOT:
Use the app Framaroot to root it, then reboot. That's all you'll need.
>>> INSTALL CUSTOM KERNEL + CLOCKWORKMOD RECOVERY:
To get CWM Recovery, you have to install a custom kernel that have it integrated. Afterward you can use CWM Recovery to flash a custom rom. To flash a custom kernel:
-Install the app SGS kernel flasher.
-Download this Synthesis kernel to the phone. (I recommend the file "2012.05.20-CWM-Infusion-GB-Zen-CoreB-14.zip" or "2013.04.30-CWM-Synthesis-1.2Ghz.zip".)
-Run the "SGS kernel flasher" app and flash the kernel's zip file, then reboot the phone.
-Wait a few minutes for the kernel to update your phone.
>>> HOW TO BOOT INTO CLOCKWORKMOD RECOVERY:
While the phone is powered off:
-Make sure the phone is not plugged into a USB cable.
-Simultaneously hold VOL UP + VOL DOWN + POWER.
-When you see the white Samsung logo appears, let go of the POWER button while still holding VOL UP & VOL DOWN.
-Soon you will see the CWM recovery menu appear. Use volume buttons to navigate and Power button to activate a menu option.
This can be tricky, so keep retrying if you can't get it. Hold all three buttons first, then make sure to not let go of the volume buttons until CWM menu appear. Try removing and reinserting your battery between tries.
>>> HOW TO FLASH AND UPDATE TO CM9 (ICS) and CM11 ROM (KitKat):
This can be tricky, but follow each steps carefully and it'll actually be easy. If at anytime you messed up and can't get the phone to boot into the OS no matter what you tried, then restore factory stock image using ODIN, the instruction for that is below this section. After that, you can retry rooting and flashing again. Flashing ODIN image (generally) will not erase files in your internal storage.
IMPORTANT:
For successful installation of Jelly Bean/KitKat rom: STOCK -> Flash ICS 4.0 (CM9 rom) -> Flash JB/KitKat 4.2-4.4 (CM10/CM11 rom).
WRONG / WILL NOT WORK: STOCK -> Flash JB/KitKat rom.
>>> RESTORE FACTORY STOCK IMAGE USING ODIN & PARTITION REPAIR:
If your phone is working fine, you have no need to do this. But if you mess something up while trying to install custom rom, you can use ODIN to restore the phone to factory state. You need to use a Windows program called "ODIN" which is used to flash stock Samsung image and your phone need to be connected to the PC while in "Download mode".
To connect your phone in Download Mode:
-Connect a USB cable to the PC, but do not connect your phone to the other end of the cable yet.
-With the phone powered off and unconnected (with battery installed), hold down both Volume buttons, then connect the phone to the USB cable (while still holding the Volume buttons).
-The phone will give you a warning and say to press Volume Up to continue to Download mode. You should see the screen with a yellow triangle and the Android shoveling.
-At this point, if you don't already have the proper drivers installed, the PC will try searching for it. Use the USB drivers I linked in the top of this post.
-After the drivers are properly installed, run the ODIN program. On the top left of the ODIN program window, under the text ID:COM, you should see in a highlighted box below with the text "COM#", # being any number, this indicate ODIN is properly detecting the phone.
Download the Infuse 4G AT&T UCLB3 Stock image. Follow the rest of the instruction in that page to flash the image. In short:
-The biggest "PDA tar file" you extracted is the main OS and need to be inserted into the PDA field in the ODIN program.
-The "PHONE tar file" is the modem (or radio), need to be inserted in the PHONE field.
-The "pit" file holds the partition table information of the phone memory, goes in the PIT field.
DO NOT UNPLUG THE USB CABLE OR TURN OFF THE PHONE WHILE ODIN IS FLASHING, you might risk bricking the device.
>>> OPTIONAL: UPDATE MODEM:
Installing the latest modem could improve the signal quality. Just flash the modem zip file while in CWM Recovery. Here is the collection of compatible modems for the Infuse 4G.
>>> Rainbow distortion when booting into custom recovery
I have never had this problem myself, but if you ever run into some kind of rainbow distortion issue that prevent you from using CWM Recovery, flash this Gingerbread bootloader using ODIN to fix the problem.
>> USB / ADB DRIVERS:
This is for Windows only. You'll need it to get your phone recognized while plugged in as ADB and Download Mode. To get the driver, go to official Samsung Infuse 4G page, click on the "Downloads" tab on the page. Download the smaller file titled "Device(Install),User Guide (Software) (ver.5_2_0_2)".
If you still have issues getting drivers detected, try this Galaxy S driver package. Another alternative, while the phone is connected to the PC, on Windows, go to Control Panel -> Windows Update, and click on "Check for updates", it might be able to find the proper driver.
>>> ROOT:
Use the app Framaroot to root it, then reboot. That's all you'll need.
>>> INSTALL CUSTOM KERNEL + CLOCKWORKMOD RECOVERY:
To get CWM Recovery, you have to install a custom kernel that have it integrated. Afterward you can use CWM Recovery to flash a custom rom. To flash a custom kernel:
-Install the app SGS kernel flasher.
-Download this Synthesis kernel to the phone. (I recommend the file "2012.05.20-CWM-Infusion-GB-Zen-CoreB-14.zip" or "2013.04.30-CWM-Synthesis-1.2Ghz.zip".)
-Run the "SGS kernel flasher" app and flash the kernel's zip file, then reboot the phone.
-Wait a few minutes for the kernel to update your phone.
>>> HOW TO BOOT INTO CLOCKWORKMOD RECOVERY:
While the phone is powered off:
-Make sure the phone is not plugged into a USB cable.
-Simultaneously hold VOL UP + VOL DOWN + POWER.
-When you see the white Samsung logo appears, let go of the POWER button while still holding VOL UP & VOL DOWN.
-Soon you will see the CWM recovery menu appear. Use volume buttons to navigate and Power button to activate a menu option.
This can be tricky, so keep retrying if you can't get it. Hold all three buttons first, then make sure to not let go of the volume buttons until CWM menu appear. Try removing and reinserting your battery between tries.
>>> HOW TO FLASH AND UPDATE TO CM9 (ICS) and CM11 ROM (KitKat):
This can be tricky, but follow each steps carefully and it'll actually be easy. If at anytime you messed up and can't get the phone to boot into the OS no matter what you tried, then restore factory stock image using ODIN, the instruction for that is below this section. After that, you can retry rooting and flashing again. Flashing ODIN image (generally) will not erase files in your internal storage.
IMPORTANT:
For successful installation of Jelly Bean/KitKat rom: STOCK -> Flash ICS 4.0 (CM9 rom) -> Flash JB/KitKat 4.2-4.4 (CM10/CM11 rom).
WRONG / WILL NOT WORK: STOCK -> Flash JB/KitKat rom.
>>> RESTORE FACTORY STOCK IMAGE USING ODIN & PARTITION REPAIR:
If your phone is working fine, you have no need to do this. But if you mess something up while trying to install custom rom, you can use ODIN to restore the phone to factory state. You need to use a Windows program called "ODIN" which is used to flash stock Samsung image and your phone need to be connected to the PC while in "Download mode".
To connect your phone in Download Mode:
-Connect a USB cable to the PC, but do not connect your phone to the other end of the cable yet.
-With the phone powered off and unconnected (with battery installed), hold down both Volume buttons, then connect the phone to the USB cable (while still holding the Volume buttons).
-The phone will give you a warning and say to press Volume Up to continue to Download mode. You should see the screen with a yellow triangle and the Android shoveling.
-At this point, if you don't already have the proper drivers installed, the PC will try searching for it. Use the USB drivers I linked in the top of this post.
-After the drivers are properly installed, run the ODIN program. On the top left of the ODIN program window, under the text ID:COM, you should see in a highlighted box below with the text "COM#", # being any number, this indicate ODIN is properly detecting the phone.
Download the Infuse 4G AT&T UCLB3 Stock image. Follow the rest of the instruction in that page to flash the image. In short:
-The biggest "PDA tar file" you extracted is the main OS and need to be inserted into the PDA field in the ODIN program.
-The "PHONE tar file" is the modem (or radio), need to be inserted in the PHONE field.
-The "pit" file holds the partition table information of the phone memory, goes in the PIT field.
DO NOT UNPLUG THE USB CABLE OR TURN OFF THE PHONE WHILE ODIN IS FLASHING, you might risk bricking the device.
>>> OPTIONAL: UPDATE MODEM:
Installing the latest modem could improve the signal quality. Just flash the modem zip file while in CWM Recovery. Here is the collection of compatible modems for the Infuse 4G.
>>> Rainbow distortion when booting into custom recovery
I have never had this problem myself, but if you ever run into some kind of rainbow distortion issue that prevent you from using CWM Recovery, flash this Gingerbread bootloader using ODIN to fix the problem.
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