Database Info

JTAG for desire S - bricked my new desire S

hi friends,
i have just f*cked up my desire S!! pls help me out!!
i have done S-OFF with XTC - Clip and also ENG HBOOT,
i tested some coustom roms on my new device till now.
now i tell you what i did:
i had this rom on my device:
[ROM] 06-13-2011 SAGA LBC MOD v0.5.1 link:
http://forum.xda-developers.com/showthread.php?t=1048203
then i wiped all data and cache over costum recovery (vers. 3.2.0.0)
after wiping i flashed this rom:
[ROM][Jun 14] Virtuous Unity 1.24.0 Sense 3.0 based on Pyramid link:
http://forum.xda-developers.com/showthread.php?t=1122797
and rebooted my phone!
i also read that the recomanded radio for this rom is:
Recommended radio: 12.54.60.25_26.09.04.11_M2
but i downloaded the wrong radioimage - file and i flashed instead this one:
http://files.virtuousrom.com/vision/radio/Vision_RADIO_12.52.60.25_26.08.04.30_M3.img
i flashed the radiorom with fastboot ober adb - everything was OK but i took the wrong radio ROM so after reboot the device does NOT boot!!!!
AND i cant get to BOOTLOADER or recovery!!! USB is also bricked!!! my PC can not find my device ( ADB)
so i NEEED help pls help me out devs!!!

i don't think the desire s has JTAG. i could be mistaken though.
does the phone register as a usb device at all when you connect to usb and push the power button?

PUSH
@ all devs in here!!!
pls help me out if possible,
NO bootloader, no USB (ADB), no recovery, NOT booting --> is my device DEAD?!?
is there any chance to get back to life without any further hardware (JTEG - BOX)?!

nothing happens when i conect my desire s to my pc!

well to 99,9999% except if you are hardware developer and know how to write to the chip directly - yes it is dead

So, this means if you flash the wrong radioimage, it can kill your phone?

flx-grafix said:
So, this means if you flash the wrong radioimage, it can kill your phone?
Click to expand...
Click to collapse
yes, i had bricked 1 year ago my htc magic with this

depends on the device, for example my old DHD recovered it's radio after i flashed a raido of the desire z, so it looks liek some devices got a protection against it
anyway, wondering why the desire s didn't has that protection when the dhd has, but can be duo locked down bootloader so they won't need it

i have to say i am surprised that flashing the wrong radio breaks it. the bootloader should remain unaffected by this and therefore still kick in and allow to flash a correct radio rom

Ep1cF4il said:
i have to say i am surprised that flashing the wrong radio breaks it. the bootloader should remain unaffected by this and therefore still kick in and allow to flash a correct radio rom
Click to expand...
Click to collapse
I'm also very suprised but its a fact. Anyone know how to get it back to life? I read times ago about MYTTI I hope it the right name. Can this help me out.
Sent from my HTC Legend using XDA App

I have always been told flashing the wrong radio will cause a brick. This thread seems to explain it for me. But whether this goes for every device I don't know.

Thanks for the link, L0cke.
But the initial question from the OP in that thread never got a precise answer...
"All I'm asking is to know exactly what is the real, down and dirty dynamics behind the radio flashing danger so I can be absolutely sure to avoid it in the future. I have yet to see a truly understandble explanation of this."
Can someone answer this in understandable words?
I actually never flashed a radio with my old Desire, even though I flashed roms like crazy and it always worked for me. I knew that flashing a radio is a critical process, so I thought unless something didn't work at all, I don't need to touch this radio stuff...

Over 600 views but no answer so far. I fear that I really ****ed up my new device.
If any dev knows a solution pls help. Remember I have S-OFF and ENG-hboot also.
Sent from my HTC Legend using XDA App

what shows up when you attempt to boot into bootloader?

r_benamin said:
Over 600 views but no answer so far. I fear that I really ****ed up my new device.
If any dev knows a solution pls help. Remember I have S-OFF and ENG-hboot also.
Sent from my HTC Legend using XDA App
Click to expand...
Click to collapse
if there is absolutley no life in it then its bricked and you cant do a thing anymore besides going to the store and tell them in the morning when you woke up it didnt turn on anymore.
ive done that with a samsung galaxy s 1 and i got a new one under warranty
if there is any sign of life then tell precise what kind of life there is in the phone then there mgiht be a chance of recovering it i think
i mean when you plug it in the ac will the charging light burn?
when you turn it on will there be any message on the screen?
if nothing is seen do you see the backlight of the screen turn on but dont display a thing

jazzaddict said:
what shows up when you attempt to boot into bootloader?
Click to expand...
Click to collapse
I just see.the. tmobile bootscreen
It vibrated once after starting and a secound time after 20sec. When I try to enter bootloader.
Sent from my HTC Legend using XDA App

... And after powering on the.led goes for one secound to green and then it turns off. Then I see the tmobile startscreen.
Sent from my HTC Legend using XDA App

r_benamin said:
... And after powering on the.led goes for one secound to green and then it turns off. Then I see the tmobile startscreen.
Sent from my HTC Legend using XDA App
Click to expand...
Click to collapse
Adb doesnt recognize the phone you said.
Any idea about fastboot commands?
As it still turns on it should be able to do something.
Instead of booting bootloader could you try recovery with vol UP and power
What happens when you do that?
Edit: not sure if that whas the combo as it dont work on my dhd. Will try it tonight when i get home on my gf here desire s
Sent from my Desire HD using XDA App

Have you remove sdcard + sim and than Boot in bootloader?
Also you can try to install the radio Form a New formated sdcard.

Volume UP and power is the same only startscreen.
Fastboot command need working adb
Sent from my HTC Legend using XDA App

[Q] arrr help

bit of a noob trying to put a nice rom on my phone..... cant get by the first bit lol,
2 problems
1 followed noob guide as regards to the revolutionary key, go the key (all case correct ect) but only got invalid key every time. So, thought maybe it did work , i better check the hboot..... Can i get into the hboot NO!!! just keeps starting the phone every time. Yes i hold volume down and press power, yes i have disabled fastboot and i have tried taking battery out..... nothing, just loads up normally every time!!
Im on a vodafone sensation , just down loaded the new 2.34 automatically, have i done somthing for the hboot screen to be nonexsistant now?

get into recovery through ADB.. with Command prompt. its on the guide as well, download adb
http://developer.android.com/guide/developing/tools/adb.html

ok down loaded adb from here
http://forum.xda-developers.com/showthread.php?t=1192300
theres 2 applications fast boot and adb, with phone connected to pc both only flash up and then disapear there command box thing. Have i done something to block or skip the hboot screen?
this is turning into an absolute nightmare! my hd2 was so easy lol all this and i havnt even s-off yet, let alone recovery, wipe and rom ( ithink)

would a factory reset bring it back?

Did you back up your phone prior because if you did, your can start from there, if not and you must, factory reset should help solve your problem.
Sent from my HTC Sensation XE with Beats Audio using XDA App

Well managed to s off god knows how lol. I found in the file I down loaded an called flash, I knew the flash would do nothing as the phone was still locked ,the cod stayed open for this and obviously it could not flash... But It the end it put my phone into the boot screen where I saw I was still on "on" so back to drawing board, now I new the key was case sensitive but I had still managed to get a capital "i" mistaken for a small "l". Only replied this when I copied and pasted to note pad where it was obvious. What a donuts I am. So now the beta key worked and I'm "off". Wahoo!. Now I think I have to root the phone and then I can put energy ROM... I hope. Thanx for your help guys. But I'm sure iv still got the hard bit to do now lol
Sent from my HTC Sensation Z710e using XDA App

Congrats! Just remember to back up before flashing in the off chance the file you downloaded is corrupted or you dislike the results
Sent from my HTC Sensation Z710e using XDA App

eric1990 said:
Congrats! Just remember to back up before flashing in the off chance the file you downloaded is corrupted or you dislike the results
Sent from my HTC Sensation Z710e using XDA App
Click to expand...
Click to collapse
+1..... i also recommend this and i also recommend downloading the ruu for your phone. saves alot of time when tryin to turn your phone back to s-on. ive seen alot of post of people askin what ruu they should download for whatever reason (mainly warranty issues) when all they had to do is check and download the correct ruu before flashing anything on there phone.

[Q] Phone Locked :s Help?

So I bricked my phone...
I have searched around the other threads with bricked devices but none of them had that worked for me. I am rooted and unlocked so I cant flash a RUU.
I can get into bootloader, it says fastboot but when I try fastboot oem Lock or any other command it says waiting for device and doesnt seem to do anything. (I can see the bootloader screen and the red FASTBOOT sign on my phone)
I can get into my recovery (TWRP V.2.1.8.1) but my SD seems to have disappeared, it wont mount to phone and I can not see it on file manager. Which means no backups or ROMS to reinstall. It also will not mount to my PC in recovery.
Since fastboot isnt working I cant flash new boot recovery or relock bootloader. I can completely stuck
If there is a way with adb (never used it so would need more detailed instructions).
If i try boot into ROM it just shows splash then loops.

Hadcook said:
So I bricked my phone...
I have searched around the other threads with bricked devices but none of them had that worked for me. I am rooted and unlocked so I cant flash a RUU.
I can get into bootloader, it says fastboot but when I try fastboot oem Lock or any other command it says waiting for device and doesnt seem to do anything. (I can see the bootloader screen and the red FASTBOOT sign on my phone)
I can get into my recovery (TWRP V.2.1.8.1) but my SD seems to have disappeared, it wont mount to phone and I can not see it on file manager. Which means no backups or ROMS to reinstall. It also will not mount to my PC in recovery.
Since fastboot isnt working I cant flash new boot recovery or relock bootloader. I can completely stuck
If there is a way with adb (never used it so would need more detailed instructions).
If i try boot into ROM it just shows splash then loops.
Click to expand...
Click to collapse
assuming you're using Windows. Is HTC sync running? If so kill it.
If you can get to boatloader, you should be able to see the phone in windows. It's kind of a failsafe.

gunnyman said:
assuming you're using Windows. Is HTC sync running? If so kill it.
If you can get to boatloader, you should be able to see the phone in windows. It's kind of a failsafe.
Click to expand...
Click to collapse
Your a genius...
I never shut HTC sync as soon as I did that I could OEM lock and now I am running the RUU.
Thanks for the quick reply and help.

Hadcook said:
Your a genius...
I never shut HTC sync as soon as I did that I could OEM lock and now I am running the RUU.
Thanks for the quick reply and help.
Click to expand...
Click to collapse
No problemmo.
You're only bricked (as far as I know) if you can't get to the bootloader.

gunnyman said:
No problemmo.
You're only bricked (as far as I know) if you can't get to the bootloader.
Click to expand...
Click to collapse
My other one x doesn't boot. Just stays in QHSUSB :banghead: I have warranty on the way for it. Still trying to figure out how to get boot back on it
Sent from my HTC One X using xda premium

dkirchik said:
My other one x doesn't boot. Just stays in QHSUSB :banghead: I have warranty on the way for it. Still trying to figure out how to get boot back on it
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
how did it get in QHSUSB? Is what someone said about pwr/vol UP true?

dkirchik said:
My other one x doesn't boot. Just stays in QHSUSB :banghead: I have warranty on the way for it. Still trying to figure out how to get boot back on it
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
Have you tried oem refurb in fastboot. I think that's the command.
Sent from my HTC One X using xda premium

kleeman7 said:
Have you tried oem refurb in fastboot. I think that's the command.
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
I can't boot into fastboot.
Sent from my HTC One X using xda premium

You shouldn't need to, there was a post in s-off saying it could be ran from dload mode. From what I read.
beaups said:
I tried the pg1fs. sig check failure. As a matter of fact doing "fastboot flash aksldjflkadsfjdlsk pg1fs.img" causes the same error, so something is in the img that causes sig check or any flash attempt except recovery is sig checked. Fastbook oem refurbish puts out a lot of interesting text, then reboots into recovery and looks for something (doesn't say what).on sd card (I tried copying IMG's to internal and external sd, no luck). Interesting thing about refurb command is it seems particularly "excited" about the fact that we have super CID - run it yourself and see, no harm is done (data, etc.). one recovery boots you can screw around with volume and power keys to see the text.
Click to expand...
Click to collapse
Sent from my HTC One X using xda premium
Sent from my HTC One X using xda premium

Phone is officially dead.
RUU'ed and it completed install without problems but phone still boot loops

Which RUU did you run? Did you try running it again? Can you still boot into the bootloader? If so what does it say at the top?
Sent from my HTC One X using xda app-developers app

I relocked boot loader and ran the AT&T 1.85 ruu
Basically I now have the phone booting up, but when sense loads I can do very little on it, like text or call. As soon as I try do something more like browse the web the phone freezes and reboots. The back get warm and won't turn on immediately. I want to say the second core is shorting which is why as soon as it clicks in it freezes. Or at least what my limited knowledge would suggest.
Guessing I'm done and will be using dumb phone for 6 months

The phone has a 1 year warranty call customer service and get a new one.

Doesn't the fact that I used htc dev unlock void that warranty? And I never got my phone from AT&T so they won't help obviously.
I thought that was the whole reason some people didn't want to use htc dev unlock because it voids that warranty and they won't help because the phone was rooted and boot loader unlocked? Has anyone tried to get a replacement from htc after unlocking?

You might void it says. Hardware defects are covered. AT&T covers the phone for 1 year regardless of where you bought it. Call them.

Hadcook said:
Phone is officially dead.
RUU'ed and it completed install without problems but phone still boot loops
Click to expand...
Click to collapse
reinstall STOCK recovery (unlock BL again first if needed)
relock BL if you unlocked in step 1
factory reset
RUU
profit.

beaups said:
reinstall STOCK recovery (unlock BL again first if needed)
relock BL if you unlocked in step 1
factory reset
RUU
profit.
Click to expand...
Click to collapse
Woooooaaahhhh stock recovery? Doesn't the ruu do that? If not where could I find the stock recovery?
I thought once you have ruu you can factory reset...

gunnyman said:
You might void it says. Hardware defects are covered. AT&T covers the phone for 1 year regardless of where you bought it. Call them.
Click to expand...
Click to collapse
I doubt AT&T would help, I bought the phone out of contract from best buy they would be getting screwed. I'll try contact htc after 4th of July

They will help. They take care of phone warranty for you. You still pay for service . This warranty is part of why you pay them.

[q] at&t htc one x camera shows black screen

i am having an htc one x its camera is showing black screen when open
i went to htc service centre they told me that camera need to be replaced but they have taken a lot of time so i took it from them and then went to other reputed service centre they also told me the same thing and change the camera but after changing camera also, problem is not solved now they are telling there is some problem on board and they cant repair it as it may dead the mobile
Please Help

monster02 said:
i am having an htc one x its camera is showing black screen when open
i went to htc service centre they told me that camera need to be replaced but they have taken a lot of time so i took it from them and then went to other reputed service centre they also told me the same thing and change the camera but after changing camera also, problem is not solved now they are telling there is some problem on board and they cant repair it as it may dead the mobile
Please Help
Click to expand...
Click to collapse
Have you flashed any roms? A bad kernel can cause this. Well, among other things.
HTC Evita, S-Off, ViperXL, ElementalX

Venomtester said:
Have you flashed any roms? A bad kernel can cause this. Well, among other things.
HTC Evita, S-Off, ViperXL, ElementalX
Click to expand...
Click to collapse
I didnt flash any rom it happen suddenly
other thing i didnt understand whats that

A kernel is the what interprets the commands between the hardware and the software. When the software needs the hardware to do something it sends it to the kernel. So everything is controlled by it. Flashing a new kernel could fix the problem.
Sent from my HTC One X using xda premium

Venomtester said:
A kernel is the what interprets the commands between the hardware and the software. When the software needs the hardware to do something it sends it to the kernel. So everything is controlled by it. Flashing a new kernel could fix the problem.
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
How to flash please suggest me or guide me it will be mote helpful

monster02 said:
How to flash please suggest me or guide me it will be mote helpful
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1952426

Do i need to root it first then flash kernel
is it harmful to my phone
if yes is there any easy way
can i do it legally loading a stock ROM

monster02 said:
Do i need to root it first then flash kernel
is it harmful to my phone
if yes is there any easy way
can i do it legally loading a stock ROM
Click to expand...
Click to collapse
if you are completly stock never unocked your phone try downloading the ruu from htc's website hook you phone to your computer and run the ruu if you still have this problem it is hardware contact htc for warrenty repair

jerrycoffman45 said:
if you are completly stock never unocked your phone try downloading the ruu from htc's website hook you phone to your computer and run the ruu if you still have this problem it is hardware contact htc for warrenty repair
Click to expand...
Click to collapse
I dont think it is never unlocked as i m usimg at&t phone on some other country with different sim

I would go into bootloader and confirm. You could brick if it is unlocked.
Sent from my HTC One X using xda premium

Hey monster if you're stock I would try a factory reset first

Venomtester said:
I would go into bootloader and confirm. You could brick if it is unlocked.
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
how to chk in boot loader

monster02 said:
how to chk in boot loader
Click to expand...
Click to collapse
Hold Power and Volume Down until the screen shuts off and lights stop flashing, then let go of power and continue holding volume down Your boot loader will open. If it reads "Tampered" "Unlocked" at the top of the screen, you have root access. If it does not then you are stock. To exit boot loader you use the volume button to go to reboot and hit power button to choose.

Venomtester said:
Hold Power and Volume Down until the screen shuts off and lights stop flashing, then let go of power and continue holding volume down Your boot loader will open. If it reads "Tampered" "Unlocked" at the top of the screen, you have root access. If it does not then you are stock. To exit boot loader you use the volume button to go to reboot and hit power button to choose.
Click to expand...
Click to collapse
I have checked it is locked that mean i didnt hv root access now next step what to do should i try unlocking and flashing a custom rom or stock rom

If you want to keep your phone stock, follow a box of kittens advice and try a factory reset. Or download update. If you wish to unlock and flash a custom Rom, please research carefully before doing so. Make sure you know your phones code name wich is also in bootloader info. Should say evita. All unlocking tools and custom roms will be tagged with the evita name.
Sent from my HTC One X using xda premium

mryncho WAS
Venomtester said:
If you want to keep your phone stock, follow a box of kittens advice and try a factory reset. Or download update. If you wish to unlock and flash a custom Rom, please research carefully before doing so. Make sure you know your phones code name wich is also in bootloader info. Should say evita. All unlocking tools and custom roms will be tagged with the evita name.
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
I have tried a factory data reset but the problem persist
what are the chances for hardware problem

Have you tried downloading the ruu from HTC like jerrycoffman suggested? I would give it a shot and if it doesn't work then follow his advice about a warrenty replacement. It would let you know if it is kernel related or hardware. It's the fastest way to find out and keeps your phone stock for replacement.
Sent from my HTC One X using xda app-developers app

Venomtester said:
Have you tried downloading the ruu from HTC like jerrycoffman suggested? I would give it a shot and if it doesn't work then follow his advice about a warrenty replacement. It would let you know if it is kernel related or hardware. It's the fastest way to find out and keeps your phone stock for replacement.
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
pls can u give me the link or video tutorial of ruu from htc
will i have to root my htc for this

link
www.htc.com
it will be under support ruu stands for rom update utility it is from htc and no you do not need root you just hook you phone to your computer and run the ruu it is a exe file it does everthing for you

www.htc.com/us/support/news.aspx?p..
Sent from my HTC One X using xda premium

[Q] HTC One X rooting interrupted and won't boot

I have tried rooting my HTC One X and I installed the wrong rom onto it after rooting it. I wasn't able to boot, but I could get to the fastboot screen by holding down the down button and the power button. I ran out of time to work on it, so I unplugged it before I had figured it out. Now I cannot get it to that screen, or even to show the charging indicator. Any ideas of how I can get it booted up again? Is there any other info you need to help me figure this out? I searched for a solution but I haven't been able to find one yet. Thanks in advance.

Firstly, do you have the HTC One X (Endeavoru) or the HTC One XL / at&t One X (Evita)?
Which ROM did you flash?
Do you know what your bootloader details were?
Sent from my One X using XDA Premium 4 mobile app

timmaaa said:
Firstly, do you have the HTC One X (Endeavoru) or the HTC One XL / at&t One X (Evita)?
Which ROM did you flash?
Do you know what your bootloader details were?
Sent from my One X using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I have the AT&T One X Evita. I tried putting on CM Recovery. Also I did get it rooted and unlocked. I was installing the ROM and I flashed one that kept the OS from starting. It showed the loading screen but stuck on that. I could always get back to the HBOOT though. Now it isn't possible to get there. It may be from the battery dying but the battery isn't charging according to the light. There is no light at all when I plug it in.

Ok, you answered the first question but what about the other two? If you want help you need to answer the questions that are asked, with as much specific detail as possible. Answering that you "flashed a ROM that kept the OS from starting" doesn't answer the question. I can't help properly unless you give me the information I need.
In terms of the LED not showing that it's charging, it does happen sometimes. Plug the phone into a wall outlet and leave it connected for eight hours, then try to boot into the bootloader using the power + volume down button combination. Don't do anything else yet though until you've answered the questions and we've ascertained exactly what's going on with your phone.
Sent from my One X using XDA Premium 4 mobile app

timmaaa said:
Ok, you answered the first question but what about the other two? If you want help you need to answer the questions that are asked, with as much specific detail as possible. Answering that you "flashed a ROM that kept the OS from starting" doesn't answer the question. I can't help properly unless you give me the information I need.
In terms of the LED not showing that it's charging, it does happen sometimes. Plug the phone into a wall outlet and leave it connected for eight hours, then try to boot into the bootloader using the power + volume down button combination. Don't do anything else yet though until you've answered the questions and we've ascertained exactly what's going on with your phone.
Sent from my One X using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I told you what details I knew. I started this a month or two ago, and since then I have misplace where I put the ROM images. So I honestly don't remember. I am trying to get the phone fixed up now, cause now I have time to fix it. From what I remember, I tried flashing an image using either adb or fastboot onto the recovery. From there I haven't been able to get it into recovery or to boot normally. I could only get to the HBOOT screen. I really can't remember which one I tried to flash on there. And I can't get many more details on the hboot screen.

It's very difficult to help in that case. Try charging for an extended period of time like I suggested before and see if it'll power on.
Sent from my One X using XDA Premium 4 mobile app

timmaaa said:
It's very difficult to help in that case. Try charging for an extended period of time like I suggested before and see if it'll power on.
Sent from my One X using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I'll do that. I will also search through backups of my computer and see if I can find those files. I will post with any updates.

SRSroot
SerenadeX said:
I have tried rooting my HTC One X and I installed the wrong rom onto it after rooting it. I wasn't able to boot, but I could get to the fastboot screen by holding down the down button and the power button. I ran out of time to work on it, so I unplugged it before I had figured it out. Now I cannot get it to that screen, or even to show the charging indicator. Any ideas of how I can get it booted up again? Is there any other info you need to help me figure this out? I searched for a solution but I haven't been able to find one yet. Thanks in advance.
Click to expand...
Click to collapse
if you want to root your devices, i recommend you to use SRSroot, This app to make your devices rooted. you just click and tarrraaaaaa... your device is rooted... :laugh:
NB: you must have internet access to use this app
search "SRSroot" in google, click official web for SRSroot and download....

SRSroot only has a 50% success rate across all devices. Plus using that will only (maybe) allow root access on a stock ROM. It doesn't allow bootloader unlocking, or installing custom recovery, or installing custom ROMs. It's pretty much useless for this device because the whole unlocking process for the Evita is quite different. Maybe don't just post this in forums where you know absolutely nothing about the device.
Sent from my Evita

fresti said:
if you want to root your devices, i recommend you to use SRSroot, This app to make your devices rooted. you just click and tarrraaaaaa... your device is rooted... :laugh:
NB: you must have internet access to use this app
search "SRSroot" in google, click official web for SRSroot and download....
Click to expand...
Click to collapse
Not relevant to this thread, as its not lack of root method that is the OPs problem. Also, if you don't have this device and don't know if the root method you suggest will work on it, you shouldn't be suggesting it.
---------- Post added at 01:22 PM ---------- Previous post was at 01:15 PM ----------
SerenadeX said:
I'll do that.
Click to expand...
Click to collapse
If you weren't actively trying to do anything (flash any kind of file, etc.) when you unplugged the phone, I would have to think its just a matter of getting the phone charged again.
On the other hand, if it doesn't come back after charging overnight (use the wall charger, not charging via computer USB), and/or you get a message QHSUSB_DLOAD when connected to your computer, the phone is pretty much done and its either time to JTAG or a new phone.