[Galaxy Tab 10.1 Android Development] nakedninja42:
READ ME:

#If using 4.2.2 and want to roll back to 4.2.1 (last build is Feb 13th), you will need to do a full wipe to move backwards or you will bootloop. (update 02/19/13)

#PSA from CyanogenMod team: https://plus.google.com/+CyanogenMod/posts/M2pVM7Y6MTq (update 02/19/13)

ADB Whitelist

As of the Android 4.2.2 update, when you connect your phone to a computer, you are presented with your computer's RSA key fingerprint to open the adb connection. You also have the ability to permanently trust the computer, so you don't have to repeat this step upon every re-connect.

In order for this to work, you must be on the latest SDK which will grant you an updated 'adb' binary.

We will not be introducing any functionality to sidestep this default security, so if you don't update, you will lose the ability to access the device using adb.

# CM 10.1 is based on Android 4.2.1. Any and all proprietary applications that you have installed outside of CM should be updated to their 4.2.1 counterparts. Do not use the 4.1 versions of proprietary applications, else you will experience difficulties.

# Do not use the CyanogenMod Updater to go from 10.0 to 10.1. While you will have a functional rom, due to the 1st bullet point, you will be left without your proprietary applications and their data. We highly suggest performing the initial install manually via recovery (flashing CM and your addons). Once you are on 10.1, you can use the CM Updater as per normal.

# You do not need to wipe when updating to 10.1 if coming from an earlier CM version. However, as we mentioned in the weekend's PSA, users updating (instead of wiping) will experience a conflict in the application data for the Clock app. You are advised to clear this apps data on first boot of 10.1.

# Another item to note is that the support for the 10.0 feature that allowed for an expanded number of targets on the pattern lockscreen is not in 10.1. If you use this lockscreen, disable it before updating from 10.0.

# Finally, we always advise that you create a backup before any update. Do note, however, that due to Android 4.2 changes to support multi-user mode, your backups will automatically be transferred to /sdcard/0/[backup folder]. Remember this when attempting to restore 10.0. Credit to post from CyanogenMOD team (G+ https://plus.google.com/+CyanogenMod/posts/9X561GFMxL5)

Coming from Samsung ICS ROM (custom or not) requires a FULL WIPE (Wipe Data, Cache, and Dalvik Cache) If you do not WIPE you will get a bootloop.

From droidbasement:

GT-P7500 (p4), GT-P7510 (p4wifi), SCH-I905 (p4vzw) and SGH-T859 (p4tmo)

-For P4VZW: You must be on stock ICS (and it’s modem) before flashing to this build, for LTE functionality

-For P4WIFI UK: You must be on the US ICS bootloader (odin .tar.md5 inside the .zip in the folder), otherwise you may incur a rolling screen

-For P4: You must be on the UK ICS bootloader (odin .tar.md5 from AUS inside the folder), otherwise you may incur a rolling screen.

-For P4*: You must be on the ICS modem for best results.

BEFORE REPORTING ANY BUGS, PLEASE DO A FULL WIPE AND FLASH AGAIN TO VERIFY THE BUG! ALSO, NOTHING WILL GET FIXED WITHOUT A LOGCAT (we cannot debug xda posts, need a logcat)

Getting a logcat:

1) Make sure ADB is installed (http://developer.android.com/sdk/index.html)

2) Open Command Prompt

3) adb logcat -d > logcat.txt

4) Locate the logcat and upload to xda