Install any version (ICS, Honeycomb, change SKUs) to your Transformer Prime
WARNING
If your bootloader is unlocked and you flashed a custom recovery, YOU WILL BRICK YOUR DEVICE BY ATTEMPTING THE STEPS BELOW!
Description
This method will allow you to apply any ICS or Honeycomb update to your tablet, no matter what the SKU of the update. This makes it possible to switch SKU's (eg. from WW to US) or to downgrade from ICS to Honeycomb. This means non US tablets can install the 9.4.2.13 US version or downgrade to 9.4.2.11 or even Honeycomb if experiencing problems.
Requirements
root access
ADB access
Disclaimer
While this process appears to work on everyone's device, you have to assume all risks due to unforeseen circumstances and need to understand there is a risk of bricking your tablet during the update.
Although someone else was successful in downgrading from ICS to Honeycomb, there has been a report of a TFP bootlooping. Everyone else has been successful in downgrading from ICS 9.4.2.13 to ICS 9.4.2.11.
UPDATE: 2 reports so far of tablets bootlooping after downgrading to Honeycomb.
Notes
It's possible OTA updates will not apply when switching SKUs. However, you can always switch back to the proper SKU once an update is available.
The Honeycomb update may wipe all data so ensure a full backup of apps & data is performed (eg. by using Titanium Backup)
It's not recommended to restore "system" data using Titanium Backup when changing between Android versions
When downgrading to a previous version of ICS, "Launcher" will force close requiring to wipe Launcher data in the Apps menu.
Voodoo Rootkeeper may not be able to restore root after updating to 9.4.2.13.
The "blob" file is contained within a ZIP file contained within the downloaded ZIP file.
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