Saturday, December 2, 2017

How to root Nook HD Mac Instructions

How to create a bootable SD card using Mac only to root and Install Android on a Nook HD. You may have an old Barnes & Noble Nook HD and may be wondering how to give it a second life. The original Nook OS is very old and has many restrictions, but the old lion's heart is beating with a dual core chip and 1 GB of RAM. So it is worth to give it a try to convert it in a complete tablet running a full version of Android.
I have installed the CyanogenMod 10.1.3 Android 4.2.2 Jelly Bean version and even though I know there are people there installing Nougat on the Nook HD I prefers to keep it light and give Jelly Bean a try.
Here is what you need:

NookHD-bootable-CWM-6027-for-emmc-stock-4GB-rev3-(02.03.13).zip  This is the Nook Bootloader file which will allow you to start your Nook HD from an SD card, there will be an image file there so the tablet will recognise as system image to boot from Android Operating System and Google Apps. As for Android the version I am using is CyanogenMod 10.1.3 Android 4.2.2 Jelly Bean These are a set of basic Google apps to start using your tablet like the Play Market from which you may install your desired applications

Download both files from here

A 4Gb micro SD card with an USB adapter. I am using an 8 Gb micro SD that I once had in a smartphone.

You may download all needed files unto a temporary folder to easy the process. I have created a folder named: nook_hd_files

Let's start to root and flash the Nook HD

1. Create a bootable SD card with Mac

Put the SD card into the USB adapter.

Format the SD with Disc Utility > MS-DOS > Delete

Unzip the Nook Bootloader file: NookHD-bootable-CWM-6027-for-emmc-stock-4GB-rev3-(02.03.13).zip
Now you will see the NookHD-bootable-CWM-6027-for-emmc-stock-4GB-rev3-(02.03.13).img file this is the bootloader that will start your Nook from the SD card.

Rename the img file to NookHD-bootable.img or any other name without the parenthesis.

Right click on the img file and check file information, copy the path to the img file somewhere


2. Flash the Nook Bootloader into the SD card

Eject the SD card, open a terminal (under Utilities) and type:

diskutil list

Insert your SD card with the USB adapter and you will see a new media appearing in the list, something like:

   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *7.8 GB     disk1
   1:                 DOS_FAT_32 NO NAME                 7.8 GB     disk1s1

/dev/disk1 is your wanted partition device, make sure that this is your wanted flash media as the use of the dd tool can overwrite any partition of your machine. If you specify the wrong device you could delete your primary Mac OS partition.

To unmount the SD card type:

diskutil unmountDisk /dev/disk1

Flash the image file with dd tool:

sudo dd if=/Users/maria/nook_hd_files/NookHD-bootable.img of=/dev/disk1 bs=1m

This may take a little while, it took 50 minutes for me.

3. Copy Android System and Google Apps into the SD card

Copy and to the SD card. I have just copied them with Finder.

Eject the SD card:

 diskutil eject /dev/disk1

Your SD card content files should look like this:

4. Root and Flash Android on Nook ND

Turn the Nook ND off and insert the SD card you will boot into the bootloader menu.

To navigate through the bootloader menu:
  •     Volume up: move up one item in the menu
  •     Volume down: move down one item
  •     Nook button: select
  •     Power button: go back to previous menu

To have a clean new install with better performance do first a wipe cache partition and then a wipe data/factory reset. All of your data will be deleted. And to flash:

1. Scroll down to the "install zip" option and select it with Nook button.
2. Scroll down to "choose zip from /external_sd" and select it with Nook button.

For the rest of the procedure you can watch my video here:

Sunday, March 5, 2017

AdSense Responsive Ads Not Showing No Slot Size for Availablewidth

How to fix AdsSense responsive problems without modifying AdSense code. AdSense Responsive adapts to device sizes to display ads properly. The size of the ad will automatically adapt to smartphones browsers, tablets and any web site. But making these ads work need some implementation or you may get the no slot size for available with Javascript error, or just not seeing any ad all.

But, do not edit the inside AdSense Javascript code at all, do not add any custom css style to it or modify the tags, just take your code from AdSense unit as is and copy and paste it in your web site. It will look like this:

<script async src="//"></script>
<ins class="adsbygoogle"
(adsbygoogle = window.adsbygoogle || []).push({});

Before copying into your web site you need to create a div that will act as a parent container:

<div style="width: 300px; height: auto">
<!-- Copy AdSense code here -->

That will display an ad with a maximum width of 300 pixels and any available height. If you only want to display ads with limited maximum width and height, let´s say you want a 300 x 250 rectangular box, then your code should look like this:

<div style="width: 300px; height: 250px">
<!-- Copy AdSense code here -->

This will display any ads with 300 x 250 pixels and any other available smaller size ad adapted to smartphones, tablets and any other device.

Sunday, February 26, 2017

How To Fix Scratched Cell Phone Camera Lens

Well, first of all do not use nail cleaner as it is highly corrosive and will badly ruin the lens. Specially if the camera lens is made of plastic. This just will ruin your phone as I did with mine.

After this, pictures looked blurry, but I tried to find a solution, a way to polish back the lens to an acceptable state so it could take decent pictures again. I had to find something that polished plastic other than tooth paste, because I tried with tooth paste to recover it but did not work. Tooth paste was not strong enough to do it.

I tried several products to find that the best one was appliance cleaner, the kind used to polish stainless steel. But it took me some patience and for more than forty minutes I scrubed the lens gently with cotton dipped in this product. I put some scotch tape around it to prevent spills inside the phone.

This is the product I have used, a strong home cleaner with ammoniac:

The last five minutes I used tooth paste for a fine finish.
I took pictures and I saw some improvement, as you can see here.

 Nice! Well, tooth paste is also corrosive and you can damage the anti glare layer on the lens, but if there are many sctractes it may be good to use it.

Here is the phone camera back to life again!

Saturday, January 14, 2017

Morotola Moto G 1st Gen Change Earpiece

How to change the earpiece of a Motorola Moto G 1st Generation. If you have sound problem during phone conversations but through the headphone the sound it is all right, it is probably a problem with the earpiece itself. You can by a new earpiece for less than 5 euros.
The first step its to remove the midframe
Remove all those screws with a Torx T5 screwdriver.
With a plastic opening tool remove the midframe starting with the corner and then sliding gently all the way down.
Carefull with power and sound volume buttons, remove then and put them aside before they fall down. And there I have found something amazing. You can see next to the camera over the earphone connector some metalic debris, it was like some kind of micro magnetic dust. I do not know how it got there, I just removed with a brush.
Unplug the battery connector you can use a pry tool like the one in the picture, it works really well.
Then pull from the plastic label that holds the battery. Do not bend the battery and use the plastic tool to help, like a lever.
Then start removing the motherboard. There are no screws, you just have to lever carefully in those places where the tool can go. Go carefully with it, remove it by the corners. The motherboard is glued to the lcd.
Open it to the side. I am not dissasembling the whole phone here, just putting the motherboard to the side to get to the earpiece.

There you can see the earpice, I am pointing to it with the pry tool
I used a very small screwdriver to remove the earpiece, but the earpiece came appart.
I just broke it. Well I had a new one anyway. But again I found lots of metalic dust behind it. I do not really know how it got there either, I just got rid of it. I am sure that it was that that was causing the hearing problem. It probably interfered with the sound vibration or something as the center of the earpiece is a magnet.

And here is the new one I just mounted. You have to place it in the same way, with the connectors in the same direction than the old one. Well, it works well now!