[GUIDE] Where's my CPU ID at, why you need adb and whats fastboot!!

I added a link to this in the V3 guide.
Thanks for this.

If you are upgrading/downgrading using APX mode then you need your cpu id.
if you're having problems then keep reading...

Upgrading via an EUU/SBK method is dependant on a "successful communication connection" between your TAB and PC

If you cannot run "adb devices" and have it return your CPU ID then the flashing process will fail.

If you have a custom ICS rom AND on the HC Bootloader this number will be your serial no. please see note below

ok, lets go, you need the correct drivers installed to begin with:


1) go to Acer Support and download the Acer Drivers
2) run the Setup.exe to install them

You must also have the ADB drivers from the android-sdk (see attached zip)

3) Extract the adb files to your desktop
4) Open command prompt as admin
5) In the command prompt window type cd
6) leave a space after it
7) drag and drop the adb folder into the command window (This saves you having to enter the path manually)
8) Now, type adb devices and write your device ID down with a zero in front...done!!!

If you cannot get adb to retrieve your ID then the flashing process will not work as it should.

You need to fix this first....

*****Note: HC Bootloaders on custom ICS builds
adb will report your device ID as your serial number, which of course will not work for APX based flashing - thanks to tehdomil for the heads up
you guys will need your original HC CPU ID which you can get from the back up you made before flashing the ICS rom. For those that didn't - try usbdeview below.

*****How to retrieve your CPU ID from USBDeview
Suggest you extract to the same folder you used for your adb files, just to keep things tidy...you're bound to want these things again
1) If you haven't plugged your tab into this pc before, do so now, before you run the program.
1a) Run the exe and you will be presented with a window of all the USB devices you have ever plugged into your computer.
2) click on "VendorID" at the top to sort them
3) Look for the number "0502" under VendorID or 3325 "ProductID"
4) In the serial number column will be a 15-digit number this is your device ID
5) Write the number down and put a 0 in front of it and now you have your CPU ID


The adb guide will still apply as far as getting your tab and pc talking on the same wave length

Ok, followed all the steps. But cannot get my PC to recognise my tablet completely. MTP:yes, or Camera:yes, yet there is a driver missing which fails to load/install. Any ideas from you bright people?

I would like to access bootloader and flash recovery.

V frustrating.

For example, where do you find mtpfs and mount for Win 7 x64?
Thanks

dibb_nz

/ adb devices
List of devices

/

In device manager, I have a "Other devices" Acer Iconia A500 no driver installed, yet "Portable Device" Acer Iconia A500 is fine.

I can copy and paste files from tablet while in MTP mode. No difference with SD card mounted or unmounted.

Very frustrating. The last device driver I assume is "USB device" but despite mucking around with Acer USB device drivers 1.00.0524 and 1.06.1500 no luck.

Grr

ADB or USBDeview both tell me that my CPUID is 0123456789ABCDEF. Of course, if I get the SKB and use NVFlash to validate it, it fails with a message that says "USB device not found."

I found my CPUID (0x033c20c541a051d7) in an old nandroid backup and tried it but with the same results.

Any ideas?

Ok i'm amending the guide as we speak, just to be clearer.

The device ID as reported by adb is 15 digits long the (UID)
when we use this no. for an EUU based flash we add a 0 to the front making 16 digits (CPUID)
the one in your nand adds 0x to the basic UID 17 digits

the CPUID from the EUU is for Honeycomb bootloaders
Which I believe is different for ICS bootloaders
and different again for HC b/l on ICS Rom!!!

i tried the SBK generator last nite for the first time and entered only my UID
and had no probs
so give that a go (in the example you gave) 033c20c541a01d7