Yes, it will overwrite the existing kernel. You need to unlock the bootloader first before overwriting the existing kernel. The bootloader is a PC's "BIOS" equivalent software running before kernel starts. To unlock it you need to download the bootloader unlocker apk, can refer to 1st post.

Depending on the kernel compilation done by developer, certain functions may break e.g. camera, sensor and etc. If you are using KM2 or JM4, you can use 1.4Ghz Koxudaxi kernel. I'm using it with KM2 and it is stable.

1. Yes. You need unlocker apk to unlock it. Flash ROM won't help and in fact if flash with custom Modaco or Overcome wont boot at all if bootloader is not unlocked.

2. Bootloader is like BIOS will always run first and primary usage to flash kernel and ROMs. Samsung's bootloader needs a PC to operate (Odin). Yes, kernel running on top of ROM and kernel with CWM can flash new ROM using SD cards.

3. Not all kernel are compatible with ROMs and devices. Some devices e.g. Latin, USA, Middle East devices cannot be flash Euro kernel. In fact some custom kernel has to use with custom rom NOT stock rom e.g. new Modaco/Overcome kernel. You have to know your current device type and also read other ppl trial/error. In fact I did many trial and error as well from r3 Modaco, v10/v11/v12 richardtrip to v2.8.9 Koxudaxi. Always make sure you backup neccessary data but reinstalling apps is always painful process...

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Added on March 9, 2011, 5:09 pmHave you guys heard of Waze?
It is community based alert app for traffic jam, police trap & etc.
Just to share and promote it to increase the user based in Malaysia.

This post has been edited by adamking: Mar 9 2011, 05:09 PM

Just download Waze from Market. It is free. In app register an account and start using.
It is kinda fun, it uses points and other funny stuff. If you post a traffic jam/accident/police trap you will get point and etc...
They made kinda like a game.

A normal 1.5A/2A charger won't charge the TAB. I tried many. There is circuit needed which detect "original" charger.
If it detect non "original", it will just draw 300~350mA (I tested it in my company lab), this current barely enough to maintain normal usage.

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Added on March 17, 2011, 12:12 pmFor me, turning on 3G and WIFI, will last me at least a day (end of day should be half). I get about ~15 calls a day.
My google sync/facebook/exchange/sms backup are running. Read news or manga during morning/lunch and during meetings.
For me great battery life... Using it almost close to 5mths now.

If using it non stop playing games with Wifi/3G on will only last 4~5hrs max.

This post has been edited by adamking: Mar 17 2011, 12:12 PM

@Benny, from the photo I can see the TAB detected a USB device plugin. Usually when this happens, I need to turn off the LCD to let the mobile charge do its job otherwise if I use the TAB it won't charge and the battery will still drop but albeit slower.

If this can charge may be I buy it as well because my current (also 1A) cannot charge while using the TAB.

Thanks benny, hmm... it is same as mine...

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Added on March 19, 2011, 8:32 amI using iTech Vibrate and also car FM-Bluetooth stereo, sometimes the tab giving weird problem.
It show "Connected" but there is no audio, has to turn off the bluetooth and enable/reconnect again.
I use BT all the time since TAB is my primary phone.
I think it is a bug... not sure it happen to anyone here.

This post has been edited by adamking: Mar 19 2011, 08:32 AM

Did you happenned to enable power-button-end-call feature?
To check,

Settings->Accessibility

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Added on March 22, 2011, 1:49 pmGalaxy Tab 8.9 thinner than IPAD 2

http://www.thegalaxytab.com/2011/03/21/sam...tails-revealed/

My dream TAB
7", 1280x800, 8.6mm and 10hrs battery

This post has been edited by adamking: Mar 22 2011, 01:49 PM

The tab require a specific voltage at the USB's D+/D- to detect original charger. So when buying a charger make sure it is written "for galaxy tab" otherwise you plug into tab, it will treat as "usb device" and turn on kies/mass storage.

Sometime samfirmware.com firmware cannot be updated via Odin ( I tried JK2 / JMA ).
So I "brick" the tab via Odin before sending back for warranty (during the kernel download, unplug the cable).
When sending back time, you mentioned your problem and said it "brick" when updating firmware via kies.

I hope it is not, Tab + phone + pocketable is my what I look for next upgrade. I bet this is the feature current SGT users looked for.

I feel 8.9 sales won't be as good as 7" SGT. Furthermore 8.9 is reaching IPAD2 space and may suffer in sales because lack of differentiation.
Stopping 7" sales without similar replacement at this moment will lost the momentum that has build up since last year.