[GUIDE] How to flash Official Firmware downloaded from ASUS site

[Detection]

I noticed a few members asking how to go about flashing the official firmware that they downloaded from ASUS's site so I sent them off a request for a step by step guide for you guys, and here it is:

PLEASE NOTE THAT FOR THE TF103/TF303 THIS PROCESS DOES NOT WORK. ON THESE MODELS PLEASE GO TO THE END OF THIS POST FOR INSTRUCTIONS.


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Thank you for contacting ASUS customer support.

To manually update your Transformer, please follow the steps below:


1. Download the most up to date firmware for your TF from the Asus support site from the link below:

http://support.asus.com/

2. Unzip the file and copy the “Asus” folder into the root directory of the Micro SD card.

NOTE: You can also copy the unzipped file to the /sdcard/ directory (internal memory)

3. Make sure that TF is on and the power cord is connected.

4. Insert the MicroSD card in the slot. Once MicroSD card is detected, a blinking exclamation mark should appear at the bottom of the main screen, next to the clock.

5. Tap on it in order to bring up the update wizard.

6. The update takes approximately 10-15 minutes to install.

Kind regards,

Vadim
ASUS Customer Support

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If you are trying this because you cannot get an automatic OTA update, first try this.

Go to settings, apps, all
Find CMclient & DMClient
Clear cache, clear data & force close both apps
Reboot your TF
Go to settings, about tablet & check for update. Hopefully, the latest firmware will then download automatically for you.

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A couple of points I feel should be noted:

MicroSD = The external Micro SDCard you physically push into the side of the TF

Copy the downloaded firmware onto the Micro SDCard while it is in the PC / Laptop card reader, before putting it into the TF (ie. Don't download the firmware on the TF or copy it to the SDCard while it is in the TF) as they state it will recognise the firmware once you insert the Micro SDCard back into the TF.

And remember it needs to be "UNZIPPED" before you copy it over

But it only needs to be unzipped ONCE. When you have unzipped it, there will be another zip file inside. Do NOT unzip that. If you end up with a META folder and a blob file, you went too far.

Hopefully this will help anyone having problems updating their firmware.

Some members have also reported success in simply copying the unzipped firmware (remember only unzip ONCE) to the /sdcard/ directory on the internal storage of their TF. This also appears to trigger the update.

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The following post was made in TF300 help regarding the updating of the TF300 to Jelly Bean 4.2.1

Try going to the Asus Support site

Select Android from the drop down and then find the newest number for your firmware. WW, US or whatever.

Download the file. It will be a .zip. Unzip the file ONE TIME. It will still be a .zip.

Place the .zip file in the top level of the /sdcard/ directory,
OR place it on a microSD formatted in a PC for FAT32.

Reboot by holding VOL DOWN and POWER for 12-15 seconds until you see some small white text. Release both buttons and hit VOL UP to enter recovery (and trigger the firmware update manually).

If this does not work, check to make sure you unzipped the file once (and that it is still a .zip file).

The darn thing worked. It was going to be my last try and that was it and it freaking worked lol

Thank you Frederuco, I now have 4.2.1

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Added by Edit by Janner43 - 28 February 2012
I came across the following PDF from Asus outlining this procedure which some may wish to save for a "rainy day"
Asus update SOP

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INSTRUCTIONS FOR TF103/TF303 (and probably all other Intel powered, ZenUI Asus models)

Please see the following section on the Asus Website...http://www.asus.com/support/FAQ/1006346

Forum member patates also posted this helpful process...

@Swipe : I would like to clarify a few things, share my personal use.
Access to the bootloader menu : Start the tablet by Pressing Volume Up + Power button in the same time and release them after 2/3 seconds (USB cable unplugged).

Menu (vol +/- to select, Power button to confirm action):

- Reboot Droidboot
- Reboot (-> restart on android)
- Recovery
- Power off

Access to recovery menu : the tab reboots after pressing power button on "Recovery" and you see a death robot with the message "no command". To access at "Wipe data factory reset", "wipe cache partion" and "apply update from adb"; press both "vol + and vol -" and release them after 2/3 second. Retry if necessary, it does not always work the first time

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Having obtained the latest firmware, members are advised to follow the advice in this Guide...
[GUIDE] How to update your firmware OTA - incremental changes & full OS updates.

[ASUSFAN0001]

Excellent post.

Worthy as a sticky, which it now is....

[leeshor]

If I'm not mistaken it's only the primary, (first) file that needs to be unzipped.

[santimanjon]

very useful info, thank's!

[mikel1971]

When I gotmy transformer. It went on line and told me there was an update.About 20min later I was running Android 3.2. no download, no unzip, nothing!!!

[Jeffrey]

When I gotmy transformer. It went on line and told me there was an update.About 20min later I was running Android 3.2. no download, no unzip, nothing!!!

You got your update OTA from Asus. It installed automatically. This thread talks to those who never got the OTA update. They need to download the file, unzip it and run the update.

[nEJC]

Been killing myself over this - it didn't update no matter how many times I've tried or how I tried ...
but the answer provided by Detection has been in here all along:

Put update file on microSD card that is on the side of tablet, not on SD card that goes into keyboard dock ... dope!

[christopher_teruna]

Should I extract the zip file inside the ASUS folder too ?

[Detection]

Should I extract the zip file inside the ASUS folder too ?

Only do as it says in the instructions, unzip the main downloaded file only, then place the ASUS folder on the MicroSD Card - no other extracting

[yud]

great post!

Originally I had the WW version. After unrooting I now have the .13_US version.
I now want either the .19_WW or .21_WW versions.
Followed the steps above, ensured my MicroSD card is formatted as FAT32, extracted the Asus folder and copied to the root of the MicroSD.
The card is recognized and mounted, but no triangle or update notifocation. When I manually check for updates (in settings) I get a "no updates" message.

Can someone please assist with getting back to HTK75.WW_epad-8.6.5.19 (or 21).

thanks.

Y.

EDIT:
managed to install HTK75.WW_epad_8.6.6.19
not sure if this is right as previously I had 8.6.5.xx
cannot install 8.6.5.21 or .13, just getting the green exclamation mark inside the droid (in recovery).

Any advice?