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[UPDATED, DUMPED!] I have an HTC 8X engineering unit! Check this out devs

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By WPMan, Senior Member on 31st October 2012, 06:50 PM
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3rd May 2013, 04:42 PM |#131  
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HTC 8X ( NOT FOR RESALE) cid 11111111 security unlocked / error 340
I have an htc 8x with cid 11111111 , and security unlocked .
First i try to debranded,but no succes,not even to start update. After i try in bootloader mode to write RUU_ACCORD_U_APO_00_HTC_Europe_2.00.401.03_1.11b.3 2.19.23_2_15.42.32_RETAIL_ENC_RELEASE and after is processing 1% i get this error

What i do wrong?
PS my phone after i power it on remain in that screen only ..,
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8th May 2013, 04:24 PM |#132  
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Thumbs up HTC 8x KeyPress sequences

Sssooo the following sequences perfrom the following on my T-Mobile HTC 8x All these assume the phone was off first...:
1. POWER and Volume UP with USB plugged in...release at black screen: Puts the Phone in QHUSB_DLOAD mode. I am assuming that this allows you to flash a bricked device/bad bootloader. I put the drivers on my system and QPST/QXDM sees my 8X as a Q/QCP-XXX (Download) QPST does come with a tool called "QPST Software Download", but It won't let me backup or restore anything because the phone is in Download mode. The "software download" tab will let me browse for a phone image and/or bootloader to flash individually.

2. Press Power and hold vol up: Starts booting, then goes to a LIghtening bolt. A Qualcomm MSM device is detected. Regular USB drivers are installed. Windows reports it as a "WinUSB Device".

3. Press Power and hold volume down: An Exclaimation mark shows up. No USB activity/devices detected. Pressing VOLUME UP > VOLUME DOWN > POWER > VOLUME this screen will perform a factory reset on the device. Maybe different sequences at this screen will make the phone do different things?

4. Press Power and camera button: Puts the phone in bootloader mode. Windows detects the device as an HTC windows Mobile device. It goes and fetches ActiveSync off of Windows Update and installs it.

With the phone booted into normal mode, some of the standard dialer codes work. From what I have been reading, the Verizon ones have the most exciting menus, the T-Mobile ones are all the same basic hardware test, and the AT&T ones do nothing. They just accept the codes and no apps open.

If someone can figure out how to toss this damn thing into DM mode, I think I can Dump radios, flash firmware, and possibly enable AWS LTE on it! If anyone else has anything else they would like me to try, let me know.
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9th May 2013, 10:27 PM |#133  
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Something interesting I stumbled across on a Spanish site detailing the Lumia 920: the Lightening bolt and Gear mode is used for Recovery Mode flashing from the official Nokia ROM updater tool. In this mode, you can flash any variant you want. Perhaps you guys will have better luck flashing the RUU files with a regular PC and this mode?

Looks like we need to go on the hunt for the HTC version....

Details at
10th August 2013, 02:42 AM |#134  
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Did anything ever come of this?

I got my hands on an ATIV S T899 engineering unit that lets me access all the partitions. It won't boot though and I can't find a ROM to flash to it. Looks like I lost this eBay gamble.

Interesting tidbit: This seems like it was a test device for T-Mobile USA. There is the T-Jingle on it and apparently its model is ODYSSEY_TMOBILE as I found in some files in the Windows directory.
23rd September 2013, 01:21 PM |#135  
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hi guys, any updates on this?
7th November 2013, 12:07 PM |#136  
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My HTC 8x Just lay down in the drawer. Attracting the rat time to time ...

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8th November 2013, 06:35 PM |#137  
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Originally Posted by x1123

My HTC 8x Just lay down in the drawer. Attracting the rat time to time ...

Sent from my Nexus 4 using XDA Premium 4 mobile app

Sent from my Galaxy Nexus using xda app-developers app
7th January 2014, 06:43 PM |#138  
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Lightbulb video
you just post a video , on how to get 8x into that mode..
i have a ATT 8x
18th August 2014, 07:21 PM |#139  
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Guys, whats happen with COTULLA and the "dump operation"? Everything was going perfect.
19th December 2014, 02:12 AM |#140  
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Hi, Guys

For HTC WP easy to DM mode, but maybe you will match driver issue, you can do follow:
##634# -> Diag -> enable diag mode

Please tell me whether QPST recognize your 8x? QPSt not recognize my HTC M8 for windows.
27th January 2015, 01:55 PM |#141  
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I can hear crickets.....
Wow, this thread is sure quiet for a long time :3

Uhmm what just happened? XD
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htc 8x, windows phone 8, wp8

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