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Last year(late 2010, maybe mid November), I rooted my phone and flashed recovery with no problem s at all. Some time after that I added Apps2SD and that went smoothly with no problems for about a week. I purchased an 8 GB SD Card for more storage room and after I partitioned it and switched the cards my phone started acting up so i rebooted it. After that I was stuck in a boot loop, so i tried to flash it back to stock but it wouldn't take to it no matter how I tried, whether it be through recovery or SW Update. So then I tried Odin Multi loader(cant remember which version but at the time I made sure it was the one meant for the Intercept) after I flashed it with the Stock through Odin, the phone bricked. Now it will not turn on in any way(recovery or other) the only thing it does do is vibrate when I plug it in to a computer, and it will occasionally show battery life through the touch screen and keyboard buttons by lighting them, but as soon as the it is unplugged it is a brick. I see the little bit of functionality as a little bit of to be able to fix this phone whether through ADB or another function but I desperately need help with this. Can someone please help me fix this phone?
note: I currently have a Samsung Transform as my main phone so if the Intercept can't be helped then it's not that big of a problem.
I have the same problem! Please help!
When you root a phone you put the rom, and recovery onto the sd card. changing sd cards disrupts this process. Put the old sd card in and tell me what happens.
The phone doesnt come on at all
see if you can get it into download mode with the battery out.
Pull battery
connect to computer with usb
vol down + camera + end
If you get into download mode this way flash the stock.tar using SWUpdater.
Nope, it doesnt work, thx though
Ok I've got the same problem with my intercept as well, So i just like to add (maybe its just me) that when i plug my phone to the computer the phone shows that its still functions right (without the screen on), I'm able to make calls, and receive them as well (with the touch of the answer button) but just the screen doesn't turn on, AT ALL!, so KJON i don't know if your having the same problem as me but I'm just a noob and i wouldn't know what to do. But there's some ammo if you need it.
I HAVE THE SAME PROBLEM! i dont even know where /sdcard/sdx/zip/ is!
My phone is also a samsung transform and not and intercept and whenever i press vol down+ Power, only the function buttons at the bottoms light up but not the screen
i am a noob.
help?
noooooob here...i didnt wanna start another thread since i have this same problem, so i hope someone reads this..
couple days ago i bricked my sprint intercept i was using SWu and forgot to take the Binary files for the Moment out so now i cant get my phone to DL mode, ive been searching since saturday night and have tried every Button combo posted and nothing, my phone will not turn on and ofcourse it isnt recognized by my pc BUT, ive noticed that only when its plugged in to the computer after trying to power it up several times it´ll vibrate then the 4 touch buttons will react to either the call or end button, also it makes the low battery sound and if i press the camera button it makes the volume sound but i CANT get to download mode, can i bring my phone back or is it done with? help please! and thanks in advance...
well, i would say boot into rrecovery by making the phone off either power button, or remove and replace battery.
next, you will need to press and hold in order: power/end call, call, and volume down.. this should boot recovery mode.
lastly, use the red scroll device to go to reset facory defaults or factory recovery, use common sense while looking. select with clicking and use arrow back button to go back to recovery main, then reboot to system. easy as pie.
Have you tried ODIN or ADB?
I have flashed the Intercept numerous times, soft bricked more than once, I was always able to recover using either the stock bootloader, CWM recovery, or flashing the ROM/Kernel directly using ODIN or ADB.
If you are still having these issues drop me a line and I'll gather some links together that should get you back up and running.
If the phone will not boot at all, even with a charged battery, I would definately try contacting Virgin Mobile and escalating the issue. I've had plenty of luck replacing devices claiming that the device just dropped dead without notice. They are usually good about sending out a replacement phone, and on rare occasions even giving you an upgraded unit if they are out of stock.
Good luck!
Did you use Odin or the swupdater?
Bug difference. Sounds like there's a missing boot loader.
Sent from my SPH-L710 using xda app-developers app
Hi, did you guys fix your bricked phones? Today I have bricked my Samsung transform (bad flash went with SW upgrade.
Only vibrates sometimes and the buttons flash a little, but no boot at all. Is there any chance to fix it? even with Jtag?
regards
Need help tried to get into flashboot mode now the phone is bugging out. all I did was got root and went perfect then I'm trying to use the flash too program and flash a rom or something. and it was telling me to connect into flashboot mode then press the ok button on the PC to start the program couldn't connect. so I kept trying and before the phone didn't want to get into any type of recovery or flash mode now the phone if I turn it on without any USB in the phone shows the Sony sign sits there and reboots by its self. or if I just plug it into my charger I freaking still get a green light and its stuck in the flash mode how can I get it to just turn on normal so I can have a working phone. Sorry for the long story its just odd I've never had a phone where if you pressed a few buttons and the PC never even saw the phone that its freaking out like I dumped a bomb in it. but nothing was wrong I had rooted perfect and turned it off a ton of time before trying to get into flashboot mode. Thanks for any advice everyone
Sent from my Nexus S using Tapatalk
i got the same issue by you so the only solution i get is to reflash generic 2.1 with flash tool and root xrec ect..and reboot with the charger plug and let's the phone charge reboot again with cable plug and when the green light disappear on boot then flash your rom with xrec. so remember don't flash with flashtool when you in xrec this made a autoflash mode and stay in flash all the time and eat your battery and maybe damage the phone if you stay in flash for long time.
jespere que je tai aider ciao
freex10.mixdarkfroshcyanthem.bb58
Hey so you did end up getting out of this mode when it happened to you? And Im getting what your say but im sorta confused so I had android 1.6 and just finished rooting and was trying to put the phone in flashboot mode. Then I downloaded the flash tool and I moves to recovery files the the data/local or where ever they where supposed to be. Then tried to get into recovery but couldn't so I downloaded a rom or generic firmware for my type of phone. but when it said to put in flash mode by just holding the back button and put the plug in and press the ok button it wouldn't find the phone. That's when my problem began I tried to just take the battery out load normal to restart but it then just gets to the Sony sign and then turns off. The software didn't even touch the phone its getting annoying cuz I just want it to turn back on. Can you or someone post a like to where I should go with those directions you posted please
Sent from my Nexus S using Tapatalk
I had cm11 (or 10, not sure) installed for about a month now (back in december) .... Went on a trip, and when coming back my phone battery ran out at the airport somehow, but i had fully charged it and i was not out all day enough for it to run out fully... I take my phone home, not really giving it much importance, and i noticed it was stuck on the bootlogo.. so i went into recovery and tried to re-flash the rom and fix it, but when i was installing the ROM again, the phone shut off randomly (i heard that happened with a certain recovery menu software sometimes, i cant remember the name)... then the phone wouldn't charge and/or turn on, and when I connect it to the pc, nothing happens other than the white led coming on.. RSD won't recognize it...
So i found out i had to charge the battery manually, and used a Universal Charger... Still, no recognition by RSD Lite...
Finally, i found a way:
1. Open RSDLite
2. Connect phone (no battery on it)
3. While holding Power + Vol Up, put the battery in
4. RSD will recognize your phone!
Problem is, it recognizes my MB525 as "S Flash OMAP0360"
And when i try to flash a .sbf i used previously to recover my phone (had bricked it before by trying to change ROMs in a sloppy manner), it seems to flash smoothly, but when it's going to reboot the phone, the progress goes up to 100% and then asks me to reboot it manually.. I read somewhere that to fix that i should take the battery out, disconnect the phone, put it back in, and make RSD recognize it like i mentioned before...... and after RSDLite says flashing is PASSED, the phone still won't turn on... I have tried at least three times and gotten the same result... Help?
The SBF i am using (because it helped me save my phone before) is:
JORLA_U3_3.4.2_107-9_SIGNED_USAJORDMR1B25TIGCOLA01E.0R_JORLAFROTIGCOL A_P009_A002_M010_HWp3_WIG146037_Service1FF.sbf
EDIT: Also, i read somewhere that when all you get is the white led (when connecting to PC) it means that your battery is not charged enough for flashing.. ?
I don't know what to do?? I read that defy's are really hard to brick... But mine got bricked out of nowhere.. wtf?
Niko. said:
I had cm11 (or 10, not sure) installed for about a month now (back in december) .... Went on a trip, and when coming back my phone battery ran out at the airport somehow, but i had fully charged it and i was not out all day enough for it to run out fully... I take my phone home, not really giving it much importance, and i noticed it was stuck on the bootlogo.. so i went into recovery and tried to re-flash the rom and fix it, but when i was installing the ROM again, the phone shut off randomly (i heard that happened with a certain recovery menu software sometimes, i cant remember the name)... then the phone wouldn't charge and/or turn on, and when I connect it to the pc, nothing happens other than the white led coming on.. RSD won't recognize it...
So i found out i had to charge the battery manually, and used a Universal Charger... Still, no recognition by RSD Lite...
Finally, i found a way:
1. Open RSDLite
2. Connect phone (no battery on it)
3. While holding Power + Vol Up, put the battery in
4. RSD will recognize your phone!
Problem is, it recognizes my MB525 as "S Flash OMAP0360"
And when i try to flash a .sbf i used previously to recover my phone (had bricked it before by trying to change ROMs in a sloppy manner), it seems to flash smoothly, but when it's going to reboot the phone, the progress goes up to 100% and then asks me to reboot it manually.. I read somewhere that to fix that i should take the battery out, disconnect the phone, put it back in, and make RSD recognize it like i mentioned before...... and after RSDLite says flashing is PASSED, the phone still won't turn on... I have tried at least three times and gotten the same result... Help?
The SBF i am using (because it helped me save my phone before) is:
JORLA_U3_3.4.2_107-9_SIGNED_USAJORDMR1B25TIGCOLA01E.0R_JORLAFROTIGCOL A_P009_A002_M010_HWp3_WIG146037_Service1FF.sbf
EDIT: Also, i read somewhere that when all you get is the white led (when connecting to PC) it means that your battery is not charged enough for flashing.. ?
I don't know what to do?? I read that defy's are really hard to brick... But mine got bricked out of nowhere.. wtf?
Click to expand...
Click to collapse
Hey there. Well, if it's still flashable it ain't bricked. I've got my other one to not be recognized (broken bootloader), which is beyond usual repair. So, did you you flash some random SBF before the rescue one you're trying out now? There's a problem with previously flashed GingerBread or Defy+ SBF images. So it would be good to know, what was the SBF running before trying "JORLA_U3_3.4.2_107-9". Also according to http://sbf.droid-developers.org/phone.php?device=27 that is 2.2.1 and there's also a "Android 2.2.2 Blur_Version.34.4.802.MB525.Latam.en.01". Tried that as well?
Anyhow, if the phone is seen by RSDlite it actually powers on and is recoverable. If the screen is just staying black, then you probably tried a downgrade from a Gingerbread SBF and didn't watch out for the BL-version.
If it's a BL-version problem then this might help. Also there is a guide to unbrick. And yes, keep an eye out for the battery level. Best would be an external charger, as the phone does not charge. McGyver way should still work though.
If it shows a LED and is seen over USb, it's not dead (yet)
Also look out for section "Common Problems/Questions" here.
htto said:
Hey there. Well, if it's still flashable it ain't bricked. I've got my other one to not be recognized (broken bootloader), which is beyond usual repair. So, did you you flash some random SBF before the rescue one you're trying out now? There's a problem with previously flashed GingerBread or Defy+ SBF images. So it would be good to know, what was the SBF running before trying "JORLA_U3_3.4.2_107-9". Also according to http://sbf.droid-developers.org/phone.php?device=27 that is 2.2.1 and there's also a "Android 2.2.2 Blur_Version.34.4.802.MB525.Latam.en.01". Tried that as well?
Anyhow, if the phone is seen by RSDlite it actually powers on and is recoverable. If the screen is just staying black, then you probably tried a downgrade from a Gingerbread SBF and didn't watch out for the BL-version.
If it's a BL-version problem then this might help. Also there is a guide to unbrick. And yes, keep an eye out for the battery level. Best would be an external charger, as the phone does not charge. McGyver way should still work though.
If it shows a LED and is seen over USb, it's not dead (yet)
Also look out for section "Common Problems/Questions" here.
Click to expand...
Click to collapse
No, i have not flashed other SBF's ever... only CM roms but i did it through the phone itself, in recovery mode.. I'll try the 2.2.2 one you told me about and see how that works out!
EDIT: No luck, the phone stays at a black screen.. it wont even reboot when RSD is done flashing.. i have to take the battery out and put it in bootloader again for RSD to say it PASSED the flashing
Niko. said:
No, i have not flashed other SBF's ever... only CM roms but i did it through the phone itself, in recovery mode.. I'll try the 2.2.2 one you told me about and see how that works out!
EDIT: No luck, the phone stays at a black screen.. it wont even reboot when RSD is done flashing.. i have to take the battery out and put it in bootloader again for RSD to say it PASSED the flashing
Click to expand...
Click to collapse
Too bad Anyway, did you try 8. from here, that is
"
If you get " Please manually power up this phone " in RSD Lite pull battery out > put your battery back > reboot into stock recovery by holding Power button and Vol- button > Choose Wipe data/cache > Choose Reboot system now
"? Also holding Power and Vol-Down while inserting battery is said to work.
I wonder if there is an SBF that also flashes cache and userdata partitions...
Nope, it just stays black-screened.... It only works if i do VOL-UP for bootloader mode, but that doesnt help
Umm, as a shot into the blue: Did you try to reinstall the Defy drivers from Motorola? It seems that missing those hinder RSD lite from detecting the Phone as MB52x and instead just show the Processor identification, i.e. "S Flash OMAP3630"
Try dfp 231. The processor identification is correct( rsdlite has been set up properly).
Sent from my MB526 using Tapatalk
thekguy said:
Try dfp 231. The processor identification is correct( rsdlite has been set up properly).
Click to expand...
Click to collapse
Yeah, it worked also for the defy in this thread.
And just for reference the original thread with the hinted SBF:in post #4
"
WIIII i have successfull unbriked my defy with this rom
defyplus_u3_4.5.1-134_dfp-231_cn_sign_ucadefyemarab1b50aa009.0r_pds03c_usajr dngibrird15_p015_a030_service1ff.sbf.gz
"
Basically had the same BL7-problem.
htto said:
Yeah, it worked also for the defy in this thread.
And just for reference the original thread with the hinted SBF:in post #4
"
WIIII i have successfull unbriked my defy with this rom
defyplus_u3_4.5.1-134_dfp-231_cn_sign_ucadefyemarab1b50aa009.0r_pds03c_usajr dngibrird15_p015_a030_service1ff.sbf.gz
"
Basically had the same BL7-problem.
Click to expand...
Click to collapse
wtf, the phone flashed correctly and everything but the screen won't turn on.... The computer recognizes it as MB526 now, and i can touch the home button and stuff and it will vibrate like it used to when it worked... i can also make the ringtones play using the moto portal page... Everything works (except for calls) other than the fact that i still have a black screen... the screen just wont turn on... Also it said it had very little internal memory compared to what it had before (had at least 2 gb i think.. now not even one)
I had sent the phone over to fix, and they told me it was unfixable... Is it possible that the guy (it wasnt an official company) who "tried to fix it" simply took parts out of it ? -_- (if he had taken parts out of it im guessing the phone wouldnt turn on at all..?)
What can i do to turn the screen on??
EDIT: i flashed DEFYPLUS_U3_4.5.1-134_DFP-231_GR_SIGN_UCADEFYEMARAB1B80AA004.0R_PDS03C_USAJRDNGIBRRTCEE_P022_A022_Service1FF.sbf
I couldnt find the one you posted there so i did the central europe one...
Niko. said:
wtf, the phone flashed correctly and everything but the screen won't turn on.... The computer recognizes it as MB526 now, and i can touch the home button and stuff and it will vibrate like it used to when it worked... i can also make the ringtones play using the moto portal page... Everything works (except for calls) other than the fact that i still have a black screen... the screen just wont turn on... Also it said it had very little internal memory compared to what it had before (had at least 2 gb i think.. now not even one)
I had sent the phone over to fix, and they told me it was unfixable... Is it possible that the guy (it wasnt an official company) who "tried to fix it" simply took parts out of it ? -_- (if he had taken parts out of it im guessing the phone wouldnt turn on at all..?)
What can i do to turn the screen on??
EDIT: i flashed DEFYPLUS_U3_4.5.1-134_DFP-231_GR_SIGN_UCADEFYEMARAB1B80AA004.0R_PDS03C_USAJRDNGIBRRTCEE_P022_A022_Service1FF.sbf
I couldnt find the one you posted there so i did the central europe one...
Click to expand...
Click to collapse
Umm, according to this thread it is supposed to be this one.
The GR vs CN maybe doesn't make a difference, but maybe the P022_A022 vs. P015_A030?
Doesn't a working phone portal allow for somehow to get logs/adb etc?
My G2 suddenly just stopped working yesterday. When I try to power it on the phone either freezes shortly after the boot screen, gets to the homescreen then shuts off, or boots to an all blue screen. I can access TWRP but haven't been able to fix it with anything I've found. My pc isn't recognizing the phone so don't know if I can flash another rom. Also tried factory reset with no luck. Any help please this is driving me crazy!!!
The same thing just happened to me! Someone please help us! IS there a solution to this?
dsljk2009 said:
My G2 suddenly just stopped working yesterday. When I try to power it on the phone either freezes shortly after the boot screen, gets to the homescreen then shuts off, or boots to an all blue screen. I can access TWRP but haven't been able to fix it with anything I've found. My pc isn't recognizing the phone so don't know if I can flash another rom. Also tried factory reset with no luck. Any help please this is driving me crazy!!!
Click to expand...
Click to collapse
colbyrainey said:
The same thing just happened to me! Someone please help us! IS there a solution to this?
Click to expand...
Click to collapse
Ok, since there is little to no information out there I thought I would share how I created and fixed this problem.
I received a new phone under warranty because of a failing sim card reader. Naturally, the first thing I did once I received it was root it. Next, I thought I would be slick and use flashify to flash a custom recovery (TWRP). Little did I know, with the new version of Android, our phones have a locked bootloader. I freaked out when I saw some weird error messages about it and tried to power off the device in the middle of it booting. BIG MISTAKE. In hindsight, I am assuming that it was re-flashing the factory recovery when I powered it off.
It gave me a solid blue screen for two hours, unless I held the power button for 10 seconds, which would just repeat the process from black screen to solid blue screen repeatedly. I tried to reboot into recovery for 2 hours by holding volume down and power. 2 HOURS!
At that point, I realized that I may have some luck getting it into download mode by powering it off, then powering it on with volume up and power and plugging in a USB cable. VOILA! It booted up normally (somehow) and I got it running the OS.
After that, I made sure that I did a factory reset by reverting to stock using the LG Software Upgrade tool.
The moral of this story is, if you are going to try to install a custom recovery on 4.4.2, make sure you know what you're doing. It turns out an app called AutoRec did the trick for me.
dsljk2009 - I hope this message helps you, or anyone else who may think they've bricked their phones.
CHEERS LADS!
If this post helped you be sure to hit thanks!
colbyrainey said:
Ok, since there is little to no information out there I thought I would share how I created and fixed this problem.
I received a new phone under warranty because of a failing sim card reader. Naturally, the first thing I did once I received it was root it. Next, I thought I would be slick and use flashify to flash a custom recovery (TWRP). Little did I know, with the new version of Android, our phones have a locked bootloader. I freaked out when I saw some weird error messages about it and tried to power off the device in the middle of it booting. BIG MISTAKE. In hindsight, I am assuming that it was re-flashing the factory recovery when I powered it off.
It gave me a solid blue screen for two hours, unless I held the power button for 10 seconds, which would just repeat the process from black screen to solid blue screen repeatedly. I tried to reboot into recovery for 2 hours by holding volume down and power. 2 HOURS!
At that point, I realized that I may have some luck getting it into download mode by powering it off, then powering it on with volume up and power and plugging in a USB cable. VOILA! It booted up normally (somehow) and I got it running the OS.
After that, I made sure that I did a factory reset by reverting to stock using the LG Software Upgrade tool.
The moral of this story is, if you are going to try to install a custom recovery on 4.4.2, make sure you know what you're doing. It turns out an app called AutoRec did the trick for me.
dsljk2009 - I hope this message helps you, or anyone else who may think they've bricked their phones.
CHEERS LADS!
If this post helped you be sure to hit thanks!
Click to expand...
Click to collapse
Hey,
How did you power off your G2 before putting it into download mode? Im experiencing the same problem.
Please assist me.
jocyrus said:
Hey,
How did you power off your G2 before putting it into download mode? Im experiencing the same problem.
Please assist me.
Click to expand...
Click to collapse
I didn't get the blue screen but I kept getting the security error screen on my d802. To turn it off, I kept holding down the power button for about 10 seconds after the screen went blank. This caused the phone to remain powered off. After that, I was able to boot into download mode. Maybe this method will work for your phone.
audit13 said:
I didn't get the blue screen but I kept getting the security error screen on my d802. To turn it off, I kept holding down the power button for about 10 seconds after the screen went blank. This caused the phone to remain powered off. After that, I was able to boot into download mode. Maybe this method will work for your phone.
Click to expand...
Click to collapse
It didn't work. Any other suggestions? :|
jocyrus said:
It didn't work. Any other suggestions? :|
Click to expand...
Click to collapse
Don't know of any other methods because holding down the power button got the phone to turn off and allow me to get into download mode. From download mode, I was able to restore a stock 5.01 ROM to my phone via LG Mobile Support Tools.
LG G2 Bluescreen then no boot after disconnecting battery
Found my LG G2 with a completely blue screen. It would not turn off. Took it apart and disconnected the battery. Reconnected the battery and there was only a blank black screen and the phone would not boot. Zilch. Even with pressing the power button with the volume down to boot into recovery.....still zilch.
I sucessfully got my phone to work again using a hair dryer trick on an LG G3, which I found here.
1. I took the back off the phone, disconnected the battery, and removed the SIM card.
2. I then used a hairdryer on high heat and blew the heat over the uncovered areas for 10 minutes.
3. I let the phone from hot to warm, reconnected the battery and put it all back together with the SIM card replaced.
4. I booted into recovery and restored a TWRP backup, and my LG G2 is working like a champ again.
Ok so before I started writing this I had only one problem now I'm worried my problem has gone from bad to worse.
I updated my 6T to 10.3.2 from the latest Beta after the process it prompted for a restart, upon restarting it got stuck in the boot animation. I tried going into Recovery and Download mode unsuccessfully so I went through the forums a bit and saw that someone who had the same problem successfully entered Recovery mode by pressing VOLUME UP+DOWN+POWER buttons simultaneously, I tried to do the same and my phone turned off and now it doesn't turn on! :crying:
Has anyone experienced this or know how to fix this? Any help will be much appreciated. Tia!
theDUD3 said:
Recovery mode by pressing VOLUME UP+DOWN+POWER buttons simultaneously, I tried to do the same and my phone turned off and now it doesn't turn on!
Click to expand...
Click to collapse
These should be clarified:
Volume Up + Power while turning on will boot to fastboot.
Volume Down + Power while turn on will boot to recovery.
Holding Volume Up + Power should force the phone to turn off.
Volume Up + Volume Down should put your phone in Download mode for the MSM Tool.
Turn the phone off, let it sit. Then try turn it back on. Any response?
try to shutdown phone ...hold vol+ and power button for like 15 sec and restart your phone if this didnt work then u can try MSM tool
Thanks guys, got it working using MSM Tool!
regarding oneplus 6 got stuck on logo screen and recovery mode not working
was just going through some random stuff on my phone and suddenly my device automatically restarted and not it is stuck on logo screen. i and when i tried to open recovery mode, nope its is just not working either. i even tried the fastboot menu to open recovery settings but still no progress help me here...its urgent going though lockdown in country so no service either cant communicate with the fam also. HELP...!!!!
frankynehemimah said:
was just going through some random stuff on my phone and suddenly my device automatically restarted and not it is stuck on logo screen. i and when i tried to open recovery mode, nope its is just not working either. i even tried the fastboot menu to open recovery settings but still no progress help me here...its urgent going though lockdown in country so no service either cant communicate with the fam also. HELP...!!!!
Click to expand...
Click to collapse
You are likely going to lose your data. Know that going in if its not already backed up.
If you have the fastboot menu you can use the fastboot roms.
Or my least favorite option or what I would try last, MSM Tool (Tmobile 6Ts use a different tool).
IMPORTANT if you want to try and recover and data off your phone first, go to fastboot, and try and "boot" the TWRP img (not the installed one, one from your PC using the fastboot command). If that works you might be able to recover data. If that does worm, try dirty flashing the last ROM you were running and see if it boots.
No worries!
frankynehemimah said:
was just going through some random stuff on my phone and suddenly my device automatically restarted and not it is stuck on logo screen. i and when i tried to open recovery mode, nope its is just not working either. i even tried the fastboot menu to open recovery settings but still no progress help me here...its urgent going though lockdown in country so no service either cant communicate with the fam also. HELP...!!!!
Click to expand...
Click to collapse
Hello, I am sorry to hear of you having this issue, I just went through 3 1/2 days (off and on) of recovering my T-Mobile OnePlus 6t which I found a way to get my unlock code within 2 weeks of having it, so I rooted it and put a custom kernel on it, stuck on 9.0 never let me update as I was not familiar with A/B partitioning, yet! The answers I saw to your questions were spot on, I just had a little to add to it and I'm sure I am not alone. Real quick let me list what has gone wrong on the rare occasion it hit the fan with the 6t...
- When I would accidentally and rarely let my battery die it seemed like it took forever to get it to reboot, I mean it sat on my desk of DOA devices for 2 weeks!
- It often seems like the buttons do not always respond properly and never have when I needed them to. Been through this before, I've bricked and unbricked and flashed and re-flashed and wiped all weekend and I like Android 10 and all but seems everything is different for every build, and everything seems to have to go in the right order with the exact right file or you wind up in a jam, period..
- That said, the previous person that answered your question has likely encountered similar, I've heard of right down to the buttons not physically working, but I have been a Smart Device Master III Technician for over 5 years, i know my buttons were not broken.
- Most likely culprit that I just handled and worked, i did have to use the MSM tool, several times - and re-unlock the BL, several times I would not even get the chance to get to fastboot, just a screen saying Build and Hardware not a match"" in yellow letters and it just bootlooped. No fastboot is no good, but when you said the tool would show some signs of working but then not, I have 2 solutions that I needed on diffrent occcasions.
1 - As mentioned fully try other USB cables, and ports, if you pull the usb-c out of the port and hold <power + vol up + vol down> eventually it will do something, very picky, sometimes gotta move your fingers to different spots on the buttons and also after 15-20sec let go of power and hit and hold it again... after a few seconds before it vibrates stick the cable in connected to your PC and the screen will be black (obv) but the msm tool will pick up on it. I know about the cables because I take good care of my phones and cables and charging ports, however on my final fix today it showed in msm tool it was connected but waiting for device.... Fed up i put the phone down and moved the usb cable a little bit and it picked up on it and did its thing! That part was just the cable, getting into qualcomm mode or w.e. is a bit tricky sometimes.
- Also someone said set it down for a while and come back to it.. THAT WORKS!! Let it fully charge and often just plugging in charger turns it on, bootloop soft brick or however have you, very simiilar to an Apple device and their DFU (don't f up mode cause screen is black..)
I hope that helps you get in touch with your family and friends.. Whatever you do, don't give up bc if you have not got it yet, you will! One other note, there are a few different msm tools available and they look the same some same size, but the one that supposed to work on my phone didn't and one that they say only a fool would attempt to try actually saved me, so if all else fails, use a different msm tool/usb cable and you will get it! I don't think I can post links yet I am on here very rarely, but plan on more! I have received so much help from XDA throughout the years on thousands of phones with just software issues alone, aas well as guides to my own phones. I would be honored to give back as I also have some extensive knowledge on many devices but I am a noob in comparison to many! Stay safe, good luck and please update and let us/ me know how it worked out for you. If i can help further I will, I have every firmware file for the OP6t, recovery, tools, software, this is not new to me but I feel your frustration!