[G2 and Desire Z Q&A, Help & Troubleshooting] jardam.cz:
Hello everybody.

First of all I would like to state, that I read a lot of threads here and there and tried moreless anything what made sense, but without success. So I decided to post a new thread, because I wasn't able to find any help in any other thread.

My device:

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HBOOT says

VISION PVT SHIP S-ON

HBOOT-0.85.0013

MICROP-0425

RADIO-26.10.04.03_M

eMMC-boot

Apr 11 2011, 23:36:27

The ROM release is most probably: Gingerbread_S_HTC_WWE_2.42.405.4 (that's what RUU says, if I try to flash)

My problem:

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I was using my HTC Desire Z as usual. It ran on stock ROM, not rooted, nothing changed and except a few self-reboots it worked OK to my satisfaction. The lasat think I did (after standing up from the toilet :laugh:) was downloading and installing some game from the Market (if necessary I can find out what exactly). I remember the game downloaded and started to install and then the system froze. No reaction, nothing. I waited some seconds and considering it is a normal system freeze I just removed the battery and put it back.

I pushed the power button and ****! The phone won't boot. It stucks on the HTC (right before writing "Quietly brilliant") and that's it.

What I tried so far:

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1. hard reset - no reaction, bootloader stuck, does nothing

2. flash a stock ROM

- I found and page with stock ROMs (of course via XDA) (cannot post the outside link). None of them works. I get a fault message about Model ID incorrect. I tried a few of them (EXE or ZIPed versions). ZIPed said "ID incorrect", EXE version says waiting for bootloader and does nothing

3. using UNREVOKED to get a Clockwork Recovery - start in FASTBOOT, connect to PC, wait for USB connection and start the "reflash_package.exe" (unrevoked3) - said "Waiting for device", no reaction

4. install custom recovery via FASTBOOT.exe - of course doesn't work because S-ON

5. install custom ROM via FASTBOOT.exe or flash-card - of course doesn't work because S-ON / stock recovery

6. unlock the bootloader via HTCdev tool: this looked promissing, but when I send request "fastboot oem get_identifier_token" I receive and error (command error)

Since the device doesn't boot, I cannot use ROM Manager or any other tool requesting running system.

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I am sorry to post this even though there might be a similar thread. I read the forum for HOURS (until 3 am, even refused nasty proposals of my GF :laugh:) but didn't find any help, just a lot of very helpful information, which don't work.

I feel like I am close, but I don't know, how to proceed. PLEASE HELP.

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Background: I am skilled in ECU development (for automotive) as well as SW development, flashing and testing, so even not being an expert to Android, I can understand pretty much. I am ready to try quite a lot. If the phone doesn't work at the end, OK then. I could send it for warranty, BUT I moved from Europe to China and closest Global Warranty is in Hong Kong. Sending the phone for repair might be equally expensive like buying a new (actually I bought already a HUAWEI U9508, rooted and flashed custom ROM).

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Thoughts: I think if I can put into the phone Clockwork recovery or at least unlock the bootloader, I should be able to flash any ROM (stock or custom) and fix the phone.

Any suggestions welcome!!!

Cheers,

Jaro