Disable lagfix on Galaxy S i9000 [Instructions]

While flashing new ROMs on your Galaxy S i9000, it’s generally recommended to disable any lagfixes you’ve previously applied on your phone because a lagfix might cause error in flashing a new ROM or make the new ROM incompatible. So below is a full guide on how to disable lagfix on your phone.

We’ve so far two lagfixes on Galaxy S i9000:

  1. Voodoo kernel
  2. Speedmod kernel

Disabling lagfix on Voodoo kernel:

  1. Switch off your phone [wait until it vibrates]
  2. Go into recovery mode by pressing the three button combo – “VOLUME UP key + HOME key + Power key”
  3. Scroll down to “Voodoo Lagfix” using Volume down button, and press Power button to select it.
  4. Select “disable lagfix
  5. Select “/system lagfix off
  6. Now select “Go Back”, and then “Reboot system now
  7. Your phone will now reboot.

During reboot the phone might make weird sounds, but don’t freak, it’s part of the process, also this reboot might take a few minutes more than usual reboot.

Disabling lagfix on Speedmod kernel:

  1. Switch off your phone [wait until it vibrates]
  2. Go into recovery mode by pressing the three button combo – “VOLUME UP key + HOME key + Power key”
  3. Select “advanced Speedmod ULK features
  4. Select “LAGFIX options
  5. Select “Disable Lagfix: Convert DATA to RFS
  6. Select “Convert SYSTEM to Ext4/RFS”   –>—>  then select Yes.
  7. Select “Go back”, and then again “Go Back
  8. Now select “Reboot system now” to reboot your phone
  9. In the next screen you’ll get a message like “SYSTEM Conversion requested”. Here, select the option “RFS: Convert to RFS
  10. The phone will reboot — and in a few minutes — display a message like “New filesystem config detected. Convert?” Select Yes.
  11. Your phone will reboot and lagfix will now be disabled.

During reboot the phone might make weird sounds, but don’t freak, it’s part of the process, also this reboot might take a few minutes more than usual reboot.

  • 2642 Posts
  • 256 Comments

Kapil still loves his Galaxy S2 i9100! No, really. And Galaxy Nexus! Need we say more what kind of guy he is? And he’s also a die-hard Liverpool FC fan.

Email: kapil@theandroidsoul.com

We’re hiring! Think you can write awesome, apply here.