I had an 11.0 o3ds, i downgraded via fieldrunner to 10.4. After that I used menuhax as entrypoint.
--------------------- MERGED ---------------------------
Basically, whenever I used sysdowngrader it will give me this error
Delete the updates folder from your SD and make sure you have DL the proper one for your console and region (OLD for old, NEW for new) and copy back to SD.
Try again keeping in mind this:
This version of sysDowngrader (which is compatible with >9.2.0 systems) uses an unstable exploit, and because of this it may take many tries to work.
If sysDowngrader crashes at any point during the downgrade (which can happen occasionally), you can power off the system by holding the power button. You will be left with what's called a "partial downgrade" or "partial", which is recoverable.
Although a partially downgraded system may show 9.2.0 as the system version, you are not done. You must restart from the beginning of this page and downgrade a second time to install any files that were not installed. Browserhax will work for partial downgrades as long as you are using the recommended version of sysDowngrader.
You MUST downgrade with the correct pack for your console/region or you will BRICK.