Hello. I have problems with my device, a Motorola Razr xt925 HD. It doesn't start, it just keeps the green led blinking when connected to wall charger, and when I plug the USB, makes a sound of a new device detected but only for a few seconds then it makes a sound of an unplugged device, and so on. It doesn't respond to any combination of buttons. I let it charging overnight, even though the battery was nearly full before this happened. Don't know if this is relevant but before this happened, I was going to flash stock Retail Brazil firmware by fastboot and got a flash failure. I turned it off and then it wouldn't turn on again. I never had this happened, I had problems but I always solved them all. Not this time hopefully you guys can help me or tell me what it could be, because I doubt it was the battery. I leave you a video showing my case.
i dont know for certain but the only time i see that green light is when battery is ou and i put it to chrge. Could your phone be in apfastboot and can t charge. It is a bit of a tough situation to troubleshoot.
Did you try keys combo to put it in fastboot, and test it by flashing
or maybe use rsd lite see if it shows you device connected? maybe then you can flash stock
i am sure there are other possibilities, let s hear from you
There's no way to enter in Fastboot by key combos and RSD lite doesn't show my device :/ maybe I need a factory cable, just in case that the battery is empty. I need more suggestions please
me paso lo mismo
did you find any solution?
im having this problem after i start using KK 4.4.2 seems like the phone go to sleeping mood by it self while my screen is locked so i have to keep clicking at power and volume up and down to restart the device now im looking for an update or a fix for this problem, another problem is the device WIFI do not catch my house signal while im away 10 feet from the house the software have bugs
I've been using CM 11 (KK 4.4.4) with no issues. This is a flash problem or maybe the battery. My phone is still dead btw I see that two more people are having the same problem here... we need a solution please.
chuYxP said:
I've been using CM 11 (KK 4.4.4) with no issues. This is a flash problem or maybe the battery. My phone is still dead btw I see that two more people are having the same problem here... we need a solution please.
Click to expand...
Click to collapse
i think your your device is dead.
this exact thing happened to me.
it happened on september, i was forced to get a new device.
i love this phone but it was dead.
i hope a fix comes through i would like to have it back
I ll take one of your hand, I need parts if interested
Any update with this? Did you try with a factory cable?
I'm going through the same thing , I read the other day that and the driver installed and nothing more .
keep trying to revive my device.
I'm going through the same thing. When I plug it into my pc , under device manager it shows "Human Interface Device" then it unmounts itself then remounts itself then unmounts. Over and over..... I've even replaced the battery.
I was running stock rom with just root, phone was working great. phone rebooted, screen never came back on but when i connect it to my computer it sees it in adb..........
Any advice would be great.
Thank you
kilroy1stcav said:
I was running stock rom with just root, phone was working great. phone rebooted, screen never came back on but when i connect it to my computer it sees it in adb..........
Any advice would be great.
Thank you
Click to expand...
Click to collapse
This thread for the droid Ultra might interest you: http://forum.xda-developers.com/droid-ultra/general/droid-ultra-maxx-brick-recovery-t2830806
There is some discussion of the Razr HD in this thread. It looks like someone with an unlocked device would need to dd their bootloader partition for this method to work.
A few years later .... Any solution? rsrsrs
any update on this scenario?
i have this situation too and the time could give us an answer, i am searching again, i took my device to some 'phone repair stores' and in less than 5 minutes they told me that the phone was dead, but i have my last doubts
Just to add an update here
I ended up with the Green light only and blank screen after trying to fix a battery issue, despite getting a number of batteries my phone wasn't accepting the batteries.
I remembered a battery issue a long while back, so went to reflash my phone to see if it resolved it.
I ended up with the green light and blank screen and no matter what buttons, it would just make a noise then keep rebooting.
I ended up using the Unbrick bat file.
RSD Lite was briefly showing a Medfield device of something starting with Med, but since the phone kept rebooting I couldn't reflash it again.
I did the Pwr and Vol down and as soon as I saw the device, I clicked the UnBrick bat and it managed to get my Moto logo up.
I then booted to Fastboot mode and reflashed and my phone is back,
See this link for the UnBrick, but when you do it, you have to be fast to catch it while the device is seen, otherwise the phone reboots after 4s or soo.
Softely Unbrick XT890 Razr i - Really Unbrick the Zombie
Well do not think that this thread is one among others. It's my experience when i messed up with my Razri. I wish I had this before, so I'm sharing it with you ! Every has his experience and a way to do it, so this is mine First I searched...
forum.xda-developers.com
Related
Just wondering how often are people experiencing this problem when the phone become completely unresponsive (unable to turn on, unable to detect, no light when charged).
I had this problem and never had it resolved and just sent the phone back for repair. It seems more and more people are posting they have this problem. Is this a ROM problem or does the HTC phone just get fried? Mine happened after I installed Revolution 6.6.2..it rebooted fine...and reinstalled apps with titanium..then all of a sudden a long tone while I was on phone and the phone unresponsive, turned off...and never turned on again.
Anyone with same problem...would appreciate your experience..and maybe we can figure out why it's happening. And I mean...the phone is just dead...no bootloop, no adb...nothing.
I ''had'' rooted Sensation Juopunutbear S-OFF,I filled the battery full...and install AOKP ROM Everything is working fine....After resetting the phone,
He did not respond...do not want to boot,does not want to even turn on,I tried everything from taking the battery to charge...no signs.....
when connecting phone to computer,sound is heard...and requires some drivers QHSUSB_DLOAD
removing battery sim sdcard and connect to power outlet and tried to switch it on-nothing...not react
is still under warranty....9 months old
I asked no one knows why it happened
I sent it to the service and I hope will not notice that he S-OFF and ROOTED :\
there are still a lot of people this problem here http://forum.xda-developers.com/showthread.php?t=1618683
Hmmm..at least yours is detected on computer. Mine was completely unresponsive...nothing worked. Some had similar problem as mine when not even the computer detects it.
IT seems to be happening quite often..and I am not sure if it's a ROM problem....but it seems it's not only from a specifice ROM.
I had one just like the op except it was stock with s-off, no custom rom yet. I turned it off and it never came back, so got a new one!
From another similar thread:
Charge your phone for 20 minutes. If you're using a Sense ROM, disable fast boot in Settings>Power. Fastboot doesn't actually power off your device, just puts it into sleep, like in Windows. This means the battery drains, even while it's "off".
On this forum, we see it atleast once a week. Something was going totally fine, no biggy, then suddenly it won't turn on, seemingly won't charge, no LEDs, not recognized by PC, etc etc.
The odds are low that it'll happen to you, but more so than other phones.
sshede said:
On this forum, we see it atleast once a week. Something was going totally fine, no biggy, then suddenly it won't turn on, seemingly won't charge, no LEDs, not recognized by PC, etc etc.
The odds are low that it'll happen to you, but more so than other phones.
Click to expand...
Click to collapse
But is this related to hardware issue or a custom ROM / firmware problem? My question is....should I try to root and do the same thing again if my phone get replaced?
If it's related to custom ROM/firmware pb...maybe it needs to be looked at? Especially when everything is running fine like many people report...
Well it would be nice if ALL of these occurrences were logged into a single thread and each user listed their firmware, rom, and kernel (which I'm most interested in)...
well i got the same problem . while playing a game phone got stuck and automatically turned off with some sound . now its desnt turning on and cant charge it coz led doesnt working ( what should i do?? going to use a another battery . if not :s idk (
Experience Senseless
HTC sensation XE with beats audio
Unlocked -Revolutionary
Pyramid Pvt S-off
Hboot 1.27.0000
Radio 11.22.3504.07_m
CID 11111111
Hi to all,
I'm in a similar situation, yesterday I updated the 4ext recovery the beta (sorry dont know what version it is) and it worked fine on the phone.
Until I thought hmm, I try [ROM][04/26/12] Virtuous Inquisition v4.0.2 :: AOSP-Experience Senseless ICS (4.0.3). I was going through the software and I've done a format on the microSD card though virtuous, and done a REBOOT on the phone, no Reboot at all. By the way while running the OS lights for the Home, Menu, Back and Search weren't truned on.
Now my phone wont turn on (although I can hear the USB being connected to my windows7 X32 bit PC). When connected to Pc or power outlet there is no indication of my phone is charged or being recharged, no light indicator.
Ok, so what if I tried using ADB commands to see if my phone still beeing detected.
I used ADB under Administrator
adb devices
*daemon not running. starting it now on port 5037 *
*daemon started successfully*
List of devices attached ( although i dont get the model number of the phone)
fastboot reboot
waiting for device
fastboot reboot-bootloader
waiting for device
fastboot flash recovery recovery.img
waiting for device
Ok no luck. Now tried to do install with the RUU_PYRAMID_LE_ICS_35_S_HTC_Europe_3.32.401.105_R_Radio_11.69.3504.00U_11.22.3504.07_M_release_251961_signed.exe
Runed under Admin again, so still no luck, all I get was an Error[170] usb connection Error. So the utility rom still could not detect the phone.
By the way when the phone is off, then I press volume down and power button, my phone is AOSP-Experience Senseless indeed, can't switch nothing on.
All well see what happens.
Yes..I think it's good to have a thread about this problem...maybe some more experienced DEVs can see why this is happening especially if this is occuring because of ROM/firmware or more hardware problems.
I am waiting for my phone to be sent to HTC and see what they say..hope they'll fix/replace one!
Battery, Brick or Senseless
By any chance, did anyone tried to use some friends or family they have the same phone, and use their battery. Maybe battery needs replacing?
Hopefully I can here someone says that I'm right, battery problem.
Also I'm looking at other websites to see whats the alternative to our situation.
Or maybe its just a brick, I will wait and see the Developers of this thread
http://forum.xda-developers.com/showthread.php?t=1522351
[Release coming next week. With a surprise!] Sensation Unbricking Project
hopefully will have a solution I feel lost without my phone, AOSP-Experience Senseless these two days.
God bless them hope they can do it.
barascus said:
By any chance, did anyone tried to use some friends or family they have the same phone, and use their battery. Maybe battery needs replacing?
Hopefully I can here someone says that I'm right, battery problem.
Also I'm looking at other websites to see whats the alternative to our situation.
Or maybe its just a brick, I will wait and see the Developers of this thread
http://forum.xda-developers.com/showthread.php?t=1522351
[Release coming next week. With a surprise!] Sensation Unbricking Project
hopefully will have a solution I feel lost without my phone, AOSP-Experience Senseless these two days.
God bless them hope they can do it.
Click to expand...
Click to collapse
For some it could be battery problems....but I think most of the ones reported it's not. As with mine..the battery was fully charged 100% when it happened...I think it was actually plugged in even.
The thread is for bricked phone that had this driver thing when it plugs into the computer...but if the phone is completely unresponsive...it's not goign to work!
I kept my phone charged for few hours, although my battery was full as well, the phone remained cold.
i had a similar problem last week on 04/19... battery was charging over night... at morning i turned the alarm off and after that the phone was dead... i sented it to support and now i have a new board inside and totaly new problems...locked bootloader and an unkown H-BOOT version (1.29.0000)
i also tried my battery in a other phone with no problems.
i had revolutionary 6.3. on it
Ok, stop me if you've heard this one before (I've searched and searched to find a solution to this issue, so I appreciate any help I can get)
I recently rooted my TF101 and have been flashing different ROM's to see which one I like the best. I'm not a complete NOOB, but I've never done flashing on a tablet before. I flashed Megatron 1.6.1 and when I went to reboot I couldn't get out of recovery and it kept looping back to recovery despite my doing a complete re-wipe/flash. When I finally powered down I wasn't able to power back on.
Now the unit will not turn on, either regularly or in recovery. It's completely dead. I've been letting it sit plugged in for a while to see if that helped and still nothing. I've held the power button down in every conceivable way and for different lengths of time and still nothing.
I'm at my wits end... any help would be AMAZING!!! Thank you in advance.
Can you get into APX mode? You may want to nvflash back to stock and try again.
Sometimes the tf not really shutdown, it just freeze in black screen when we thought it already shutdown. Undock it and plug in charger to see if it charging as it might be given up totally battery drained.
Sent from my awesome rooted Defy: 2.3.6 XDA premium
I have been unable to get the unit into APX mode... when I plug it into the PC it recognizes it as a generic device but I can't do anything with it other than eject it.
I've heard about the "deep sleep" issue and I was really hoping it was something simple like that. I've left it plugged in over night and it still won't respond to anything.
Is this thing bricked? I'm used to troubleshooting issues with devices but typically if it can't even turn on there's not much that can be done. I'm fearing the WORST!!!
Rogueharvest said:
I have been unable to get the unit into APX mode... when I plug it into the PC it recognizes it as a generic device but I can't do anything with it other than eject it.
I've heard about the "deep sleep" issue and I was really hoping it was something simple like that. I've left it plugged in over night and it still won't respond to anything.
Is this thing bricked? I'm used to troubleshooting issues with devices but typically if it can't even turn on there's not much that can be done. I'm fearing the WORST!!!
Click to expand...
Click to collapse
it happened to my wife's tf101 too we went out of town for a 2 day vacation then we forgot to shut it down..when we got back we noticed that it connected to our wireless tether...when we tried to open it the device simply wont open...but the thing is you could hear it starting up and plays music when hitting the play button on the dock..but the screen is all dead...i dont know what to do
redninja007 said:
it happened to my wife's tf101 too we went out of town for a 2 day vacation then we forgot to shut it down..when we got back we noticed that it connected to our wireless tether...when we tried to open it the device simply wont open...but the thing is you could hear it starting up and plays music when hitting the play button on the dock..but the screen is all dead...i dont know what to do
Click to expand...
Click to collapse
The battery might be drained after 2 days away. Try charge it individually first.
As the OP issue.. I fear it might be the display problem but you must be certain before judging it to hardware issue. Still best way is flashing it to stock via NVflash method when all the screen give is black. You can do it by just listening the connection sound on your PC and install the right driver for the APX to work.
new damages
farsight73 said:
The battery might be drained after 2 days away. Try charge it individually first.
As the OP issue.. I fear it might be the display problem but you must be certain before judging it to hardware issue. Still best way is flashing it to stock via NVflash method when all the screen give is black. You can do it by just listening the connection sound on your PC and install the right driver for the APX to work.
Click to expand...
Click to collapse
i already tried nvflashing back to stock it went back to stock but the screen still wont turn on...i charged it for 12 hours still nothing.but it plays music still ...after getting pissed off,,,my wife hits the tf101 screen and then it turns on finally but the screen was orange and red... then she hit it again then i think she damaged it once more hahhaha....im pissed off too but when thinkin bout her face while hitting the tf101 EPIC hahahha...any help wanted i wanna buy new screen... attatched is the picture she sent me hahaha
So, I was using fastboot to flash some recoveries for testing (EOS, rogue, cwm) and suddenly my xoom doesn't want to turn on (last command I issued was fastboot reboot and it never turned back on).
I have it plugged in and the charging light shows its charging. It was at around 80% battery so I don't think that's the issue.
Any help please? Any way to force a power on?
Try power button and volume up together...
Sent from my MZ601 using Tapatalk 2
Yeah, I've tried.
Tried just about everything at this point. Probably going to send it in for repair today.
Just keep trying hopefully u get it working again....i had same problem, i mean i couldnt powered it up and thought it was bricked, but after a 30mins and couple of tries more got it up again. Did full wipe of all data and since than enjoy fresh and clean JB xoom
Same problem!!!
I had the same problem testerday and till can't fix it. Please help. I was doing the reffered here http://forum.xda-developers.com/archive/index.php/t-995108.html and the problem appeared after step10 (Type "./fastboot reboot" (wait for reboot)), but it not reboot!!!! I just can see the motorola image from the beginning and that's it.
Please, HELP US!!!!
Nah, my xoom is a bit over a year old and its been heavily used. Not saying I throw it around or anything but I imagined it would have some sort of hardware malfunction eventually.
Just to be clear, I'm not even getting a splash screen or anything. No display at all and from what I can tell, no response from pushing buttons.
I have been using this site for years and searching for the last few weeks I am not new to changing roms but this time i missed a step and the situation is this the phones does not respond to any buttons and the white led indication light comes on when i connect to PC normally this means battery is totally dead but I followed other instructions on this site and recharge battery independently and checked its charge with multimeter and everything good.
The only time the phone gives me any indication that it is responding is when connected to the PC with white LED, any suggestions or is it the time for the bin, any suggestions help appreciated, thanks in advance and just to make it clear the phone not booting up into anything from what i can see.
Looks like you're hard bricked, but it also can be dead battery. So first I recomended recharge battery. And also tell us that you did to the phone before - downgrade to GB & etc.
Sorry man. Sounds like she's dead.
http://forum.xda-developers.com/showthread.php?t=1937112
EDIT
Beat to the punch.
I also had screwed up my phone. I had tried to downgrade to GB after ICS (OTA)... I know it was really stupid of me...
Anyway, I also used to get white LED when connected to PC.
When connected to wall charger I used to get Moto Logo. I thought it was getting charged, but it was not.
I then gave it to the Moto authorised service center, and then gave me back phone with GB flashed...
When I asked them what they did, they told me battery was dead and the charged it(not through the phone, but by using some other sort of charger)...
You should also try the same.
Tell them that the battery went completely dead, while you were trying to do OTA update. (That's what i told)
karthiks.840 said:
I also had screwed up my phone. I had tried to downgrade to GB after ICS (OTA)... I know it was really stupid of me...
Anyway, I also used to get white LED when connected to PC.
When connected to wall charger I used to get Moto Logo. I thought it was getting charged, but it was not.
I then gave it to the Moto authorised service center, and then gave me back phone with GB flashed...
When I asked them what they did, they told me battery was dead and the charged it(not through the phone, but by using some other sort of charger)...
You should also try the same.
Tell them that the battery went completely dead, while you were trying to do OTA update. (That's what i told)
Click to expand...
Click to collapse
If you can see the Moto Logo when you switch on the phone or connect to a charger, that means your phone is not Hard Bricked, its Soft Bricked. You can use RSDLite and fxz your phone back to life, but if you see a black screen and a white LED when you connect to your phone to a PC/Laptop, that means your phone is Hard Bricked. If you are on warranty, return it to Motorola and get a replacement. Hope this helps.
minhajlk said:
If you can see the Moto Logo when you switch on the phone or connect to a charger, that means your phone is not Hard Bricked, its Soft Bricked. You can use RSDLite and fxz your phone back to life, but if you see a black screen and a white LED when you connect to your phone to a PC/Laptop, that means your phone is Hard Bricked. If you are on warranty, return it to Motorola and get a replacement. Hope this helps.
Click to expand...
Click to collapse
Dear Sir,
I was using Stock ICS 4.0.4 (InlineFlashing_Edison_67.21.125_CFC_P3_APBP.xml) on my atrix but later when i try to restart it, it shows Customer ID error so i used to open it again by using BP Tools. Later i found in some threads that switching back to Stock GB will help you recovering that error. so i download Stock GB (InlineFlashing_edison_5.5.175.16_cfc_p3_APBP_CID285). while doing it from RSDLite during the middle process (5/20 reboot bootflash) it went fails and my phone turned black. now its not opening neither any combination of keys are working and nor showing the LED lite. Now what to do? any solution?
moiz.mithani said:
Dear Sir,
I was using Stock ICS 4.0.4 (InlineFlashing_Edison_67.21.125_CFC_P3_APBP.xml) on my atrix but later when i try to restart it, it shows Customer ID error so i used to open it again by using BP Tools. Later i found in some threads that switching back to Stock GB will help you recovering that error. so i download Stock GB (InlineFlashing_edison_5.5.175.16_cfc_p3_APBP_CID285). while doing it from RSDLite during the middle process (5/20 reboot bootflash) it went fails and my phone turned black. now its not opening neither any combination of keys are working and nor showing the LED lite. Now what to do? any solution?
Click to expand...
Click to collapse
I replied to the other thread you opened. Please do not post the same thing in a thread then, open another with the same thing, as it just clutters this board.
Please look in the other thread you posted:
http://forum.xda-developers.com/showthread.php?p=44971858
moiz.mithani said:
Dear Sir,
I was using Stock ICS 4.0.4 (InlineFlashing_Edison_67.21.125_CFC_P3_APBP.xml) on my atrix but later when i try to restart it, it shows Customer ID error so i used to open it again by using BP Tools. Later i found in some threads that switching back to Stock GB will help you recovering that error. so i download Stock GB (InlineFlashing_edison_5.5.175.16_cfc_p3_APBP_CID285). while doing it from RSDLite during the middle process (5/20 reboot bootflash) it went fails and my phone turned black. now its not opening neither any combination of keys are working and nor showing the LED lite. Now what to do? any solution?
Click to expand...
Click to collapse
Sorry to be the bearer of bad news, but there is no known way to recover a lost CID if you didn't back it up. I don't know where you read that flashing back to GB would fix it, because the general consensus in this forum is flashing back to GB from ICS will, more often than not, hard brick your phone. It sounds to me like that is exactly what happened, you've hard bricked your phone. There is no "fix" for that though there is still some hope. If your phone is still under warranty you can just get it replaced. If it's not under warranty, you can try to buy another Atrix 2 with a cracked screen and use the mother board from it to replace the one in your phone.
Is there any possibility you can provide a link to where it was said that the Customer Identification Number could be restored in this manner? I think it's important to correct whomever gave you this bad information before they cause someone else to make this same mistake.
Brought to you by time and relative dimensions in space.
1BadWolf said:
Sorry to be the bearer of bad news, but there is no known way to recover a lost CID if you didn't back it up. I don't know where you read that flashing back to GB would fix it, because the general consensus in this forum is flashing back to GB from ICS will, more often than not, hard brick your phone. It sounds to me like that is exactly what happened, you've hard bricked your phone. There is no "fix" for that though there is still some hope. If your phone is still under warranty you can just get it replaced. If it's not under warranty, you can try to buy another Atrix 2 with a cracked screen and use the mother board from it to replace the one in your phone.
Is there any possibility you can provide a link to where it was said that the Customer Identification Number could be restored in this manner? I think it's important to correct whomever gave you this bad information before they cause someone else to make this same mistake.
Brought to you by time and relative dimensions in space.
Click to expand...
Click to collapse
Thanks for the reply, m in Pakistan and the phone is AT&T came from US .. so no point of warranty for me and it happens exactly after one year lol .. anyways i showed it to market .. hardware person says its software issue and vise versa ... board is perfect .. but its not opening .. bootloader is dead .. and i cant find anyone here using test point for flashing motorola ..
Stick with one thread. Multi posting is frowned upon.
Sent from my MB865 using Tapatalk 2
bildar said:
I have been using this site for years and searching for the last few weeks I am not new to changing roms but this time i missed a step and the situation is this the phones does not respond to any buttons and the white led indication light comes on when i connect to PC normally this means battery is totally dead but I followed other instructions on this site and recharge battery independently and checked its charge with multimeter and everything good.
The only time the phone gives me any indication that it is responding is when connected to the PC with white LED, any suggestions or is it the time for the bin, any suggestions help appreciated, thanks in advance and just to make it clear the phone not booting up into anything from what i can see.
Click to expand...
Click to collapse
What message do you get when you use RSD lite.... does the PC recognize the device in any way or not...
coz my defy went the same way with the white led coz of a dead battery (try MCgruvier method ) and check once......
i have a nexus s 4 g from sprint. it is hard bricked. i tried to root it and change recovery.then it shut off and wont power on, light up at all. I would like to know if i am able to achieve download mode, what do i need to do, what files and how to install to return this phone to stock?? please help!!!
Take out the battery for a few seconds and put it back; then while holding Volume UP (+) press the Power Button.
See what happens...
One helpful tool is found here:
http://forum.xda-developers.com/showthread.php?t=1984849
kozmo2k4 said:
Take out the battery for a few seconds and put it back; then while holding Volume UP (+) press the Power Button.
See what happens...
One helpful tool is found here:
http://forum.xda-developers.com/showthread.php?t=1984849
Click to expand...
Click to collapse
Nothing. Happens it don't light up or power on at all. It is not reconized on computer either. It's hard bricked.
Make sure the Battery is charging...
How can I make sure the battery is charging when no lights come on at all? All I do know is I had it plugged in for a while yesterday and it got really warm. But no lights whatsoever. The screen doesn't light up at all neither does the led.
??????
There are no notification lights on the D720, but when you plug it in with a charger, you should see a battery bar on the display.
Other than that, you are probably right about hard-brick.
I, luckily, never had a "brick" on the Nexus S, so someone else with experience may wanna chime in. But Google and YouTube are your friends.
Sorry...
Sent from my NookColor using Tapatalk 4
Hey man, did you have any luck with this? I'm experiencing the same problem.
Talal916 said:
Hey man, did you have any luck with this? I'm experiencing the same problem.
Click to expand...
Click to collapse
Please help me, i have the same problem
been awhile since any action here. saved mine with JIG method once but this time it won't work ??!(why) , in search of a solution again! -> hardbrick #2 on this device!
You guys can try a USB Jig. If that does not help, I think JTAG is what you need.
Jesus... just to revive this thread (and this concept of hard bricking), I think I just accidentally bricked mine as well.
Here's exactly what I did:
One moment, it was working spectacularly - fully stock, but unlocked. I had just listed it on eBay, too.
So I ran a factory reset on it (from the Settings menu), also "erase USB storage".
Then, after it shut down for the reboot, I pulled the battery.
...
That was it. Now it doesn't turn on for anything whatsoever. No device detected on USB when plugged into PC. Remove, replace battery, hold VolUp+Power, nothing. Plug into power adapter, nothing. Nothing at all.
But the back does get lukewarm after a minute or so, as if it's alive in the head but frozen, unable to start the bootloader.
WTF? I also have 2 more of these Nexus S 4G's, and both of them seem to have Flash storage chips that exhibit the same behavior when their chips are placed in (this) working motherboard. They can't boot. When I try to "hot-flash" it by booting the bootloader then swapping the Flash chips, they can't flash anything (this is probably to be expected). So, if I can get my ONCE-WORKING phone back to life, there's a good chance I can get another working as well (one just has a cracked glass, otherwise working mainboard & peripherals).
It's old, yes, but it's a damn shame to E-waste these things for a stupid software problem like this!