8 replies to this topic

[soulrom]

Hi People,

Sorry to bother you about a very simple problem that I can't fix.

My son's ZTE Racer (Australian) decided not to boot past the green Android screen. He doesn't think he did anything odd to cause this.

I've tried lots of suggestions from this site and all I can get to work is to put it into FTM mode and then it appears under the Windows (7) drivers as "ZTE Handset Diagnostic Interface(DFU) (COM3)"

I looked at and downloaded all sorts of ROMS and fastboot-windows.exe and adb-windows.exe as suggested by RacerBoy at http://android.modac...very-for-racer/ but as this phone has not been rooted or modified in any way the ADB drivers do not load.

I downloaded an unlocking program to my PC that correctly identified the phone and if I just let it boot normally (without Vol+ or Vol-) then connect to the computer I see a modem device which in diagnostic mode identified the IMEI etc, so the phone is working to some extent despite only the Android robot visible on the screen (which then goes to the TELSTRA logo and freezes).

I have downloaded a TELSTRA ROM file found elsewhere in these forums (TELSTRA_P726TV1.0.0B12-update_signed.zip) - this looks like a full filesystem dump.

Just to restate: this is a completely unmodified phone so Developer Debugging was not turned on, hence the ADB drivers do not work. Nearly everything on this site seems to be about rooted phones with extra things done including Developer Debugging enabled. That is not the case with this phone.

Surely there is some way to fix the phone from FTM/DFU mode only? Or what other programs/roms/action do I need to get/take to recover to factory default or (better yet) to recover to a bootable phone, maybe even without losing data?

Despite my searching on this site this critical thing seems to be missing:  how to unbrick/reflash a virginal (unrooted) phone from only FTM/DFU mode. I assume that's exactly what FTM mode is for though - so how do you do it?

BTW it's ok if all data is lost.

Thanks for any help - exact links/instructions would be excellent too!

Edited by soulrom, 03 January 2012 - 06:00 AM.

[redhawkuk]

You need to install ClockworkMod Recovery using the fastboot method (power on + volume up)  - http://android.modac...-for-zte-racer/
If successful FTM should be replaced by ClockworkMod Recovery (power on + volume down) from there you can backup your partitions or install a new ROM via update.zip from your Micro SD card.
There are 2 versions of the ZTE Racer I believe the Telstra Smart Touch is a Gen1 device judging by the design and the fact it's pre-installed with Android 2.1

Richard S.

Edited by redhawkuk, 04 January 2012 - 11:28 AM.

[soulrom]

I have followed the instructions you linked to http://android.modac...-for-zte-racer/ under "fastboot method"

I used the fastboot-windows.exe I got from the link in my original post.

I started the phone as instructed (power + volume up) - the device went to green screen then the Telstra logo screen and stopped there as "usual".

I plugged usb cable to my PC (Windows 7)

The next line in the instructions is "From a command prompt run 'fastboot flash recovery <filename>.img' "

When I run" fastboot-windows devices" it shows nothing (ie it can't find any devices). Maybe it's working though and "fastboot devices" doesn't work? In which case I tried using the boot.img and then recovery.img files in the ROM file mentioned above, but it just says < waiting for device > (BTW which img file should I be using?)

In other places on this site it says under Windows Devices I should see an ADB device - I do not. BTW I have installed the ADB device driver from Google Android SDK and also tried updated version from other places - no difference.

From my reading I understand that the ADB drivers, which fastboot needs, are only installed if Developer Debugging was turned on on the phone but it was not, as I stated in my post. Am I correct in saying this method wont work then?

The only devices that install in Windows when the phone is plugged in in this "fastboot" mode are:

drive H:\ under Portable Devices
ZTE Handset USB Modem under Modems, and
under Universal Serial Bus Controllers the devices USB Composite Device and USB Mass Storage Device.

Hence is seems I can't install ClockworkMod Recovery?

Please tell me if I'm doing something wrong (which is highly likely and I'd love to know how to get it right) as I am stuck again on how do I proceed from here or how to reinstall from FTM mode?

thanks

Edited by soulrom, 04 January 2012 - 12:01 PM.

[redhawkuk]

Fast boot mode doesn't require debugging enabled since this is a low level mode for modifying the partitions on your handset.
If you're unable to use fastboot it's possible the drivers aren't working correctly under Windows 7 (use an XP machine) or Telstra have done something to prevent flashing.

All I can say coming from experience my handset was also in a non-bootable state and the only way to install ClockworkMod was using fastboot.
For this I used the "recovery" method provided by Rickywyatt - http://android.modac...w-racer-rom-v2/ it has the ZTE drivers and batch file script to install ClockworkMod.

If you still cannot flash ClockworkMod then I guess it's a trip back to the phone shop unless someone else has a better suggestion.

Richard S.

Edited by redhawkuk, 04 January 2012 - 04:22 PM.

[soulrom]

redhawkuk, on 04 January 2012 - 04:17 PM, said:

Fast boot mode doesn't require debugging enabled since this is a low level mode for modifying the partitions on your handset.
If you're unable to use fastboot it's possible the drivers aren't working correctly under Windows 7 (use an XP machine) or Telstra have done something to prevent flashing.

All I can say coming from experience my handset was also in a non-bootable state and the only way to install ClockworkMod was using fastboot.
For this I used the "recovery" method provided by Rickywyatt - http://android.modac...w-racer-rom-v2/ it has the ZTE drivers and batch file script to install ClockworkMod.

If you still cannot flash ClockworkMod then I guess it's a trip back to the phone shop unless someone else has a better suggestion.

Richard S.

None of the options mentioned above worked. I've tried it from 4 computers running Win7, WinXP, Vista and a Mac. None of them see or load and ADB device (with the driver loaded) with POWERON+VOL UP and all machines see the Diagnostic Mode device when I boot the phone to FTM mode with POWERON+VOL Down.

As none of the comments or suggestions anywhere on this site show how to access the Racer from the FTM mode (all methods use the VOL UP/FASTBOOT mode) I assume the phone is bricked permanently - which is odd as I would have thought FTM mode is there for a reason [sigh]

thanks for all help and suggestions

[redhawkuk]

Someone suggested another way to enter fastboot if he's correct then the keyboard sequence has been changed - "on my phone, I had to enter fastboot mode by holding down CALL+VolDown and power on." ( http://forums.whirlp...9344&p=33 )

Richard S.

Edited by redhawkuk, 07 January 2012 - 01:24 PM.

[soulrom]

redhawkuk, on 07 January 2012 - 01:21 PM, said:

Someone suggested another way to enter fastboot if he's correct then the keyboard sequence has been changed - "on my phone, I had to enter fastboot mode by holding down CALL+VolDown and power on." ( http://forums.whirlp...9344&p=33 )

Richard S.

OMG OMG OMG!!! This worked! Thankyou so much!

Holding down the HOME KEY and VOL Down and then POWER ON brought up the phone in fastboot mode and from there everything worked. Phone has now been reinstalled from scratch and all is good!

Thanks so much for your help on this - very, very much appreciated.

cheers

Michael S

[senupe]

OMG!!! Thank you sooooo much i had exactly the same problem as soulrom but i made it into fastboot and flashed the CWM.
The thing is i don't have the original ROM of my phone cause on the backup i did it shows "empty file" whr trying to flash it on CWM
I uploaded the files on the recovery folder to the internet to see if you can help me somehow to see why it doesn't work and shows "empry file"
(The files are splited in 2, cause i can't upload big files, sorry).
Part 1
Part 2

[equiliym]

this is a year old thread mate... just download some stock rom or any custom cm7 rom and flash via cwm, will get your phone working