Develop Bugs

[SOLVED] HERM200 Buttons ko

Hi @all,
I've got a BIG problem!
without ANY reason the:
MAIL front button
Start menu front button
OK front button
Left & rigth soft key
Answ & Hangup... buttonS
do not answ.
Also the keyboard go in crazy...
1) Test
Hard resetting (L&R Soft keys and reset key) -> The phone go in reset mode, asking for R or X
2) Test
dismounting HERM200 to verify if some connector or flat cable is not ok -> everithing is on his own set...
SOME SUGGESTIONS?
Tanks a lot and best regards @ all
VulKan desperate XXV
[SOLUTION]
After a long and desperate period during while the strong chose to buy a new device... THIS MORING, WATCHING MOTO GP...
The desperate trying: Double Hard Reset.
1) Hard Reset TYTN
2) when it ask to press SPACE, Hard Reset again...
Now my tytn is OK!
[email protected]
W XDA-DEVELOPERS

UP
Desperation Level 5

Up
Desperation Level 4!

vulkanxxv said:
1) Test
Hard resetting (L&R Soft keys and reset key) -> The phone go in reset mode, asking for R or X
Click to expand...
Click to collapse
This isn't clear. Did you actually *perform* the hard reset (by pressing R)? If not, this should be your first step.

MrWee said:
This isn't clear. Did you actually *perform* the hard reset (by pressing R)? If not, this should be your first step.
Click to expand...
Click to collapse
I do not need perform the hard reset.
I do this to test the soft keys.

I've been having a similar problem, the green dial button on my phone does not work at all.
I think my problem is most likely a faulty pcb (new one on order from cnn.cn), I'll let you know if it fixes the problem.
I've tried numerous hard resets and flashes, and that did nothing to fix my problem.
But thats the least of my worries right now, my phone is plagued with the disappearing radio issue at the moment (http://forum.xda-developers.com/showthread.php?t=304364) so its of no use at all to me.
Hopefully we can figure out how to fiix this issue, let me know if you have any success.

vulkanxxv said:
I do not need perform the hard reset.
I do this to test the soft keys.
Click to expand...
Click to collapse
Actually, If they DO work to get you to the hard reset, but do NOT work when you are in the main OS, I would suggest trying a hard reset, as It seems to be a software-caused problem.

invictive said:
I've been having a similar problem, the green dial button on my phone does not work at all.
I think my problem is most likely a faulty pcb (new one on order from cnn.cn), I'll let you know if it fixes the problem.
I've tried numerous hard resets and flashes, and that did nothing to fix my problem.
But thats the least of my worries right now, my phone is plagued with the disappearing radio issue at the moment (http://forum.xda-developers.com/showthread.php?t=304364) so its of no use at all to me.
Hopefully we can figure out how to fiix this issue, let me know if you have any success.
Click to expand...
Click to collapse
I suppose that is this the reason of this buttons fault...
MrWee said:
Actually, If they DO work to get you to the hard reset, but do NOT work when you are in the main OS, I would suggest trying a hard reset, as It seems to be a software-caused problem.
Click to expand...
Click to collapse
I did it many time...
Desperation level 3

Desperation level 2

vulkanxxv said:
Hi @all,
I've got a BIG problem!
without ANY reason the:
MAIL front button
Start menu front button
OK front button
Left & rigth soft key
Answ & Hangup... buttonS
do not answ.
Click to expand...
Click to collapse
I had this problem when I first installed Black 3.0. Soft resetting made no difference. However, I simply opened my hermes hardware keyboard and closed it again and the buttons came back to life. No problem since.

revmark said:
I had this problem when I first installed Black 3.0. Soft resetting made no difference. However, I simply opened my hermes hardware keyboard and closed it again and the buttons came back to life. No problem since.
Click to expand...
Click to collapse
I will try it tomorrow!
Desperation level 1

PANIC LEVEL 5
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Nobody know other solutions?

NEWS
I've dismonted completly my Hermes... remounted and the problem persist!
Now, sometime the down button open the messages application.
If my idea is correct, the problem is exclusively software.
Im going to downgrade radio.
Actually I've installed Black 3.x with 1.41.00.10

what software do you have installed. because i noticed on some today themes i would have that problem. try going to the default today theme and use sktools to do a clean function. That will get rid of any registry keys causing a conflict. hope that helps

donsaxena said:
what software do you have installed. because i noticed on some today themes i would have that problem. try going to the default today theme and use sktools to do a clean function. That will get rid of any registry keys causing a conflict. hope that helps
Click to expand...
Click to collapse
I use some simple SW.
EZDial
Phonepad international
TomTom 6.10
PSShutxp
Batti.2.1
SMS Treaded
Next news
After radio downgrading -> Buttons dead
Black 3.x to LVSW 3.30.0.9 -> Buttons dead
LVSW 3.30.0.9 to LVSW 3.30.01 Full -> Buttons dead
Now, exist a method to hard hard hard reset the hermes?
Unbriking method is valid?

Busted keys
I have the same issue. I am sure it's not software- have flashed a different ROM etc, removed the battery, and other things with no result. I have a feeling it's a hw issue- the buttons suddenly came to life, but after keeping the phone in my hot&sweaty jeans pocket during a hot day, they stopped working again. I've also noticed several people complain about this issue. I will try to get it fixed on warranty. I'd be interested to know if anyone else suspects MOISTURE as a possible cause???

LazPL said:
the buttons suddenly came to life, but after keeping the phone in my hot&sweaty jeans pocket during a hot day
Click to expand...
Click to collapse
I live in Sicily... here we have ALL hot days!
But i've the same idea. Later i try to dry the phone using a phon (hairdryer in Italy)...
LazPL said:
they stopped working again. I've also noticed several people complain about this issue. I will try to get it fixed on warranty. I'd be interested to know if anyone else suspects MOISTURE as a possible cause???
Click to expand...
Click to collapse
About the moisture, i do not belive that is technically possible.

vulkanxxv said:
About the moisture, i do not belive that is technically possible.
Click to expand...
Click to collapse
Hm. Perhaps not. As far as moisture goes, it COULD have such an effect, corroding contacts or if applied to the PCB, create currents where there shouldn't be any. But in any case it seems to be hardware related. I am really angry about this because I really like the phone otherwise... Now it's nearly unusable. Maybe its just the circuit board that is poorly done.
I was in Sicily last summer. Beautiful.

revmark said:
I had this problem when I first installed Black 3.0. Soft resetting made no difference. However, I simply opened my hermes hardware keyboard and closed it again and the buttons came back to life. No problem since.
Click to expand...
Click to collapse
Revmark, when you say you opened the keyboard, what do you mean? Do you mean you slid out the keyboard, and closed it? Or do you mean you took the Herm apart?
Laz

Wifi and USB not working

Hello:
I have a Pumpkin head unit Model S07 - MTCB-KLD2 migrated to Malaysk ROM 4.4.4, and everything was working until suddenly the internal WIFI didn't work anymore.
Decided to make a new upgrade, I have actually the Lollipop Android 5.1 Malaysk ROM for RK3188 1024x600, and I wasn't able to had the Wifi working. After reading posts in this Forum I've got the chance to put a Wifi USB dongle into one of the USB external ports, and for my surprise I've just discovered that both USB's are not working anymore, so actually I have a broken radio in actual state.
I've also noticed that the internal beep sound has changed to a new one, and furthermore whenever i try to get into the Recovery mode pressing until the three beeps come out, 2 seconds after this 3 beeps sounds a long beep, and the bootup menu doesn't show, so I couldn't try to update the firmware anymore.
Did you think that going back to the original Pumpkin firmware will solve the problem? Is the WIFI faulty, as I've read before, so common in these units, and there is not any workaround possible to fix it? What about the USB's broken how could I check it up? Anyone know if there exists any APP to check system LOG faults to try to guess the workarounds with all this faulty hardware? Exactly one year after I' ve bought the unit is starting to give the problems I mentioned before, programmmatic obsolescence?
Thanks for the hard work!!!!
Greetz from Madrid.

Nobody?
twelvemonkeys said:
Hello:
I have a Pumpkin head unit Model S07 - MTCB-KLD2 migrated to Malaysk ROM 4.4.4, and everything was working until suddenly the internal WIFI didn't work anymore.
Decided to make a new upgrade, I have actually the Lollipop Android 5.1 Malaysk ROM for RK3188 1024x600, and I wasn't able to had the Wifi working. After reading posts in this Forum I've got the chance to put a Wifi USB dongle into one of the USB external ports, and for my surprise I've just discovered that both USB's are not working anymore, so actually I have a broken radio in actual state.
I've also noticed that the internal beep sound has changed to a new one, and furthermore whenever i try to get into the Recovery mode pressing until the three beeps come out, 2 seconds after this 3 beeps sounds a long beep, and the bootup menu doesn't show, so I couldn't try to update the firmware anymore.
Did you think that going back to the original Pumpkin firmware will solve the problem? Is the WIFI faulty, as I've read before, so common in these units, and there is not any workaround possible to fix it? What about the USB's broken how could I check it up? Anyone know if there exists any APP to check system LOG faults to try to guess the workarounds with all this faulty hardware? Exactly one year after I' ve bought the unit is starting to give the problems I mentioned before, programmmatic obsolescence?
Thanks for the hard work!!!!
Greetz from Madrid.
Click to expand...
Click to collapse

http://www.autopumpkin.com/forum/viewtopic.php?f=3&t=777

As you could suppose I've read it, the problem is the USB malfunction that doesn't allow the workaround showed there.
Here there's a LogCat of the system when WIFI enabled:
paste board . co / n8j6icCLW.jpg

I've written in many forums as it's supposed to be a generelized problem with resellers as Eonon, Joying, Pumpkin (mine), and all those HuiFei type brands. Some of them tried a workaround setting the Date/Time not to be automatic and fied the Wifi, but no chance whenever USB/Wifi are both broken. The Pumpkin reseller asked to return the HA and charging for the fix of the PCB!!!, it sounds like I have to open up the HA, dismantle it and send it back to factory to fix. My unit it's actually exactly 1 year old, and I will be without radio until receivng it, wait for fix and resend it to me from China, charging me with a repair fee and the billing costs, and no radio plugged in my car!

Wifi and USB Fixed
Finally I've got the solution with the unvaluable Help from ZelenyR that helped me on the full process.
I've guessed that some internal resistance, capacitor, inductor was burnt, and tried to find following the PCB routes all over the circuit what in the hell were, tried to find a little burn in some of them and find finally that a small inductor L9 (all of them are inductors beginning with a 'L') did not showed on the multimeter as nornally should do, verified that is a component very sensible to tensions peaks produced because of over tension when connecting external USB electronics such as a mobile, or ext HDD. On ZelenyR's words: "The problem is inductance which you need. I used 220nH for 3.5Amp main parameter was max current over 3Amps to be sure that it will not burn again. Easiest way is just simply short this component but I don´t recommend it because it is not safe and can go to bigger damage in case of overloading USB and also it is necessary to block supply noise going to WiFi ."
Thanks to him I'm actually repaired my init luckily!!! and saved 100€ and 3 months without the unit.
Greetz

Bad eyes
I have same problem after iphone 4 was connected thru usb interface, wifi is off and cant be ON. Where is L9 located ? Try to find it about an hour...

this is....
SwIFTop said:
I have same problem after iphone 4 was connected thru usb interface, wifi is off and cant be ON. Where is L9 located ? Try to find it about an hour...
Click to expand...
Click to collapse
It's located as L19 you could see that is slightly brown (it means it's burnt) at the middle bottom of the image in a row that reads: "C103 Q9 R134 L19 R131 Q6 R128"
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twelvemonkeys said:
It's located as L19 you could see that is slightly brown (it means it's burnt) at the middle bottom of the image in a row that reads: "C103 Q9 R134 L19 R131 Q6 R128"
Click to expand...
Click to collapse
Can you mark the on the picture where the burn is? I cant see anything by L19 just the writing.

typos1 said:
Can you mark the on the picture where the burn is? I cant see anything by L19 just the writing.
Click to expand...
Click to collapse
Oh dear!! count the chips!! the legends are in the same row(1st legend, first chip, 2nd legend 2nd chip,...), it's the fourth one chip

twelvemonkeys said:
Oh dear!! count the chips!! the legends are in the same row(1st legend, first chip, 2nd legend 2nd chip,...), it's the fourth one chip
Click to expand...
Click to collapse
Chips ? Youre not talking about chips youre talking about an inducter. I can see the legends but nothing near them to show what the legend is referring to. And besides, the quote in your post says its "L9" not "L19" as you say.
Can you mark on the picture where ? I am not thinking of me, but or anyone who reads this to be able to see for reference should it happen to someone else.

Same thing happened to mine. My wifi and both usb doesn't work anymore after 8 months of use. 11-RQ0369E-US part number. I wonder if the board is the same as mine. I haven't open it yet, just wanted to confirm that it's something within the board. Everything else works except what I've described. I usually would play music through the usb. Where did you get the inductor?

za_ny said:
Same thing happened to mine. My wifi and both usb doesn't work anymore after 8 months of use. 11-RQ0369E-US part number. I wonder if the board is the same as mine. I haven't open it yet, just wanted to confirm that it's something within the board. Everything else works except what I've described. I usually would play music through the usb. Where did you get the inductor?
Click to expand...
Click to collapse
Have you tried updating the MCU ?

typos1 said:
Have you tried updating the MCU ?
Click to expand...
Click to collapse
No, I haven't. How would I do that, unless I use a sd card. Where would I get the update if there was one. I'm running the 5.1

za_ny said:
No, I haven't. How would I do that, unless I use a sd card. Where would I get the update if there was one. I'm running the 5.1
Click to expand...
Click to collapse
It doesnt matter what Android version youre running. MCUs are in the links in my signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB

typos1 said:
It doesnt matter what Android version youre running. MCUs are in the links in my signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB
Click to expand...
Click to collapse
signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB[/QUOTE]
I see the firmware but it's kind of confusing me though. My MCU version is MTCC-KLD6-V2.91 May 31 2016. So I would have to download the MTCB-MTCC_lolipop_5.1.1 but noticed there are a custom and official. Should I download the official one? Thanks.

za_ny said:
signature, try an MTCC one if you have a Klyde (KLD), this is an update to MTCB
Click to expand...
Click to collapse
I see the firmware but it's kind of confusing me though. My MCU version is MTCC-KLD6-V2.91 May 31 2016. So I would have to download the MTCB-MTCC_lolipop_5.1.1 but noticed there are a custom and official. Should I download the official one? Thanks.[/QUOTE]
Neither, the MCU is separate from the ROM, I suggestd you try updating the MCU not the ROM, updating your ROM will likely not help your problem.
Try the MCUs attached, the later one first, if you get any problems try the earlier one.

Try the MCUs attached, the later one first, if you get any problems try the earlier one.[/QUOTE]
I've tried both of them and I still see the wifi being off and the USB doesn't work as well. Thank you for your time though, I appreciate it.

za_ny said:
Try the MCUs attached, the later one first, if you get any problems try the earlier one.
Click to expand...
Click to collapse
I've tried both of them and I still see the wifi being off and the USB doesn't work as well. Thank you for your time though, I appreciate it.[/QUOTE]
That was just the first thing to try.
When you say "the wifi being off", what happens when you turn it on ? USB is always not very good for various reasons, adding more power to it may help.

That was just the first thing to try.
When you say "the wifi being off", what happens when you turn it on ? USB is always not very good for various reasons, adding more power to it may help.[/QUOTE]
The wifi remains grey out in the on position, then it goes back to being off again. Before when it wasn't broken, I could turn it on and it would search for wifi but not anymore. For the USB, I can no longer use it at all. I was reading the circuit board share the same circuit so it wouldn't surprise me if it needs one because both the wifi and usb failed and stopped at the same time while driving.

Galaxy Tab S - Only reboots if I HOLD POWER Button. Once I let go it powers off.

So I'm trying to fix my mom-in-laws tablet - at first it was stuck at a reboot loop.
But once I managed to switch it off and charge to 100% it stopped looping, but only goes to the logo screen then switches off.
I experimented a little - and found out if I hold the power button, it will load to the home screen.
Now I tried doing a factory reset by holding power+volume down + home button > it reaches the reboot menu but I can't make a selection because once I release the power button it switches off.
Wondering if there's anything I can do? I'd rather not buy spare parts and open up the tablet - and I'd also rather not bring it to a shop..
Any help would be appreciated!

I have more new about this issue.
I found a hardware fix for this, but it requires some soldering skills.
It seems that power consumption is triggering the baterry power protection.
I manage to bypass the battery protection circuit on the battery and it solves the power cycles.
If anyone wants help on this, I will try do take some pictures.
I also re-solder the power connector on the table PCB because it is weekly soldered...
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PandaKiller said:
I have more new about this issue.
I found a hardware fix for this, but it requires some soldering skills.
It seems that power consumption is triggering the baterry power protection.
I manage to bypass the battery protection circuit on the battery and it solves the power cycles.
If anyone wants help on this, I will try do take some pictures.
I also re-solder the power connector on the table PCB because it is weekly soldered...
View attachment 5161983
Click to expand...
Click to collapse
Hello, i will apreciate more information about bypass of batttery protection. Many thanks if tou can give this.

PandaKiller said:
I have more new about this issue.
I found a hardware fix for this, but it requires some soldering skills.
It seems that power consumption is triggering the baterry power protection.
I manage to bypass the battery protection circuit on the battery and it solves the power cycles.
If anyone wants help on this, I will try do take some pictures.
I also re-solder the power connector on the table PCB because it is weekly soldered...
View attachment 5161983
Click to expand...
Click to collapse
How to bypass the battery protection circuit?

foolone said:
How to bypass the battery protection circuit?
Click to expand...
Click to collapse
If you zoom in my picture from above, you can see the soldered white wires on the small PCB from the battery.

PandaKiller said:
If you zoom in my picture from above, you can see the soldered white wires on the small PCB from the battery.
Click to expand...
Click to collapse
Thanks. I have a different tablet (SM-T800) and the battery looks different. How did you figure out the pins for bypass the protection circuit.

foolone said:
Thanks. I have a different tablet (SM-T800) and the battery looks different. How did you figure out the pins for bypass the protection circuit.
Click to expand...
Click to collapse
I'm an electronic engineer, working in microelectronics testing, specialized in Power Management
But at the end, if you have freaking shutdowns, I decided to replace a battery by a power source, and then came out with the Idea of bypassing the over current circuit in the battery. Just a multimeter and a soldering iron and that's it!

PandaKiller said:
I'm an electronic engineer, working in microelectronics testing, specialized in Power Management
But at the end, if you have freaking shutdowns, I decided to replace a battery by a power source, and then came out with the Idea of bypassing the over current circuit in the battery. Just a multimeter and a soldering iron and that's it!
Click to expand...
Click to collapse
Hi. I have the same problem on a tab s t805 tablet, I understand this problem is from the battery? if i change it, will it still have this problem? Thank you.

PandaKiller said:
I'm an electronic engineer, working in microelectronics testing, specialized in Power Management
But at the end, if you have freaking shutdowns, I decided to replace a battery by a power source, and then came out with the Idea of bypassing the over current circuit in the battery. Just a multimeter and a soldering iron and that's it!
Click to expand...
Click to collapse
1.if I enter force restore mode and after taking my finger off the power button it shuts down.
if I have my finger on the power button and use the arrow button in this menu, it moves up - down.
2.if I turn on the tablet, the logo appears and after 3 seconds it restarts and keeps restarting.
3.if I enter the software installation mode, it successfully completes this process and if finished it restarts and returns to problem 2.

drager2011 said:
1.if I enter force restore mode and after taking my finger off the power button it shuts down.
if I have my finger on the power button and use the arrow button in this menu, it moves up - down.
2.if I turn on the tablet, the logo appears and after 3 seconds it restarts and keeps restarting.
3.if I enter the software installation mode, it successfully completes this process and if finished it restarts and returns to problem 2.
Click to expand...
Click to collapse
I don't believe your problem is with the battery. The random reboots because of the battery only occurs when the battery is not full. If you have a charged battery and the USB Power cable connected, it should not have random reboots.

PandaKiller said:
I don't believe your problem is with the battery. The random reboots because of the battery only occurs when the battery is not full. If you have a charged battery and the USB Power cable connected, it should not have random reboots.
Click to expand...
Click to collapse
I charged the tablet up to 100% and it does the same thing, it restarts after a few seconds! do you think this problem could be from the motherboard or do you have another idea?

drager2011 said:
I charged the tablet up to 100% and it does the same thing, it restarts after a few seconds! do you think this problem could be from the motherboard or do you have another idea?
Click to expand...
Click to collapse
You may need to flash a new ROM using Odin.

PandaKiller said:
You may need to flash a new ROM using Odin.
Click to expand...
Click to collapse
I installed the software (Marshmallow, Lollipop) and after it restarts, it returns to the same problem (as in the video).I will try again.

drager2011 said:
I installed the software (Marshmallow, Lollipop) and after it restarts, it returns to the same problem (as in the video).I will try again.
Click to expand...
Click to collapse
Even if you keep it plugged to the charger?

PandaKiller said:
Even if you keep it plugged to the charger?
Click to expand...
Click to collapse
I tried it again and the same problem persists. if I plug it in you can see the video.

if I try to enter the hard reset menu see video!

drager2011 said:
if I try to enter the hard reset menu see video!
Click to expand...
Click to collapse
Have you performed a factory reset? (wipe data)

PandaKiller said:
Have you performed a factory reset? (wipe data)
Click to expand...
Click to collapse
I did this and after restart it does the same thing (reboots) .

Galaxy a50 data recovery.

Hey, so i broke my phone, because it fell from a high place, and it broke the display completely. The mainboard is okay.
I really need a way to acces my data. luckily i have twrp installed, and i am able to reboot it there, and the touchscreen appears to be working.
I have to blindly touch the screen to enable MTP in the twrp. i have the older twrp, where you have to manually enable it, but dont know where is it. Can someone guide me?

Assuming that touch still works try entering recovery mode , then connect it to a pc and then try to do the swipe to unlock in twrp
It should be about .5 to 1 inch from bottom to top , maybe even closer to the bottom of it worked and twrp is unlocked you should see the phone being dectected , then try get to touch mount , it should be a little more up and to the left than the swipe to unlock , then on the bottom right corner you should have the option to monut . Attached a picture I found that may help locating the buttons
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You could also try a usb hub and connecr your phone to a hdmi display + mouse and keyboard , but those can cost 25 USD and upward , good luck!
Edit:typo

Sadly, it does not show up in my computer. But i know i did enable mtp, because twrp freezes for a sec or two when i enable it. The usb datalines might be damaged, as i see it, because with the official charger, my usb diagnostic thing reads 5.13 volts, with 0,21 amps. RIP i guess, or i dont know what to do other than pay someone to fix it.
I tried ADB sideload too, but it didnt work either.
Guess i have to buy a new phone, or pay half of the original price to get it fixed, wich is not something that worth it.
I think im gonna buy a new phone, and let this puppy rest for a while, then i'll buy a cheap LCD screen for it, then repair the screen myself.
Edit: the phone is a little warm, if charged. hope nothing is wrong with the battery. It seems to be bootlooping, but when the system startup finishes, i could hear facebook's notif sound, so data is probably fine, i'm just unable to get it out from there.
Assuming if there's any problem with the USB port, i wont try the hdmi, mouse, keyboard method.

kmarci76 said:
Sadly, it does not show up in my computer. But i know i did enable mtp, because twrp freezes for a sec or two when i enable it. The usb datalines might be damaged, as i see it, because with the official charger, my usb diagnostic thing reads 5.13 volts, with 0,21 amps. RIP i guess, or i dont know what to do other than pay someone to fix it.
I tried ADB sideload too, but it didnt work either.
Guess i have to buy a new phone, or pay half of the original price to get it fixed, wich is not something that worth it.
I think im gonna buy a new phone, and let this puppy rest for a while, then i'll buy a cheap LCD screen for it, then repair the screen myself.
Edit: the phone is a little warm, if charged. hope nothing is wrong with the battery. It seems to be bootlooping, but when the system startup finishes, i could hear facebook's notif sound, so data is probably fine, i'm just unable to get it out from there.
Assuming if there's any problem with the USB port, i wont try the hdmi, mouse, keyboard method.
Click to expand...
Click to collapse
Can you boot system if so put the latest smart switch on you PC an backup your data .

if you have twrp .. then you don't have to worry .. just press and hold volume down and power button for 6-7 seconds .. when the phone vibrates release the volume down button only and press and hold volume up .. (don't release the power button yet) wait 2 seconds and then release the power button.. so now you're only pressing the volume up ... press hold it for 7-8 seconds... your phone will get into twrp ..
connect your phone to your pc.. and voila your internal storage is on your pc..
p.s- don't forget to install Samsung drivers before you do this...
p.s - it's too late for this solution thou but if you're still searching for solution... this will help and only works if twrp is already there.

Question Flashed wrong firmware by mistake and now wont go into bootloader or fastboot

Downloaded a link from this article on XDA https://www.xda-developers.com/pixel-6-november-update-fingerprint-bug-fixed/
but didn't realise they had posted the wrong link and instead used the link for pixel 5a. Phone will connect and disconnect whenever i press power button or either volume buttons. Tried the usual force restart and bootloader button but still black screen and laptop not recognising phone except showing as USB serial device briefly when it does connect

muzab a said:
Downloaded a link from this article on XDA https://www.xda-developers.com/pixel-6-november-update-fingerprint-bug-fixed/
but didn't realise they had posted the wrong link and instead used the link for pixel 5a. Phone will connect and disconnect whenever i press power button or either volume buttons. Tried the usual force restart and bootloader button but still black screen and laptop not recognising phone except showing as USB serial device briefly when it does connect
Click to expand...
Click to collapse
I was messing around with my 6 Pro and ended up in recovery mode. None of the normal button combos were wrorking.
I ended up holding the power button / vol down for nearly 30 seconds and it rebooted back to the fastboot/bootloader mode.
Not sure if this will help you but the usual shorter time needed to boot wasn't working for me, but holding for 30 seconds did.
Good luck!

You could always try Official Google Pixel Update and Software Repair or Official Google Android Flash Tool.
Also, always go directly to the source Pixel 6 Pro Factory Images, don't trust anyone else's links.

didn't work but i can see it connecting and disconnecting constantly. did you have the device show up as USB serial device. Also what kind of cable did use (usbc to usbc?)

muzab a said:
didn't work but i can see it connecting and disconnecting constantly. did you have the device show up as USB serial device. Also what kind of cable did use (usbc to usbc?)
Click to expand...
Click to collapse
You might want to "Reply" or "Quote" the person you're responding to, so they get a notification that they're tagged and know that you have a question for them. I assume you're responding to @Az Biker.
When you have it plugged into your computer, do you see it in Device Manager? USB-C <-> USB-C or USB-A <-> USB-C shouldn't matter, as long as it's the original or a quality cable (Anker or from a previous PIxel or other quality OEM cable).
You can attach a screenshot of your Device Manager if you're not sure what you're looking for.

roirraW edor ehT said:
You might want to "Reply" or "Quote" the person you're responding to, so they get a notification that they're tagged and know that you have a question for them. I assume you're responding to @Az Biker.
When you have it plugged into your computer, do you see it in Device Manager? USB-C <-> USB-C or USB-A <-> USB-C shouldn't matter, as long as it's the original or a quality cable (Anker or from a previous PIxel or other quality OEM cable).
You can attach a screenshot of your Device Manager if you're not sure what you're looking for.
Click to expand...
Click to collapse
sorry , its showing as USB serial device (COM3) under ports section.

muzab a said:
sorry , its showing as USB serial device (COM3) under ports section.
Click to expand...
Click to collapse
No sweat! And it doesn't have an exclamation point through it's icon in Device Manager, right? (which would mean you need to install the latest Google USB Driver).

roirraW edor ehT said:
No sweat! And it doesn't have an exclamation point through it's icon in Device Manager, right? (which would mean you need to install the latest Google USB Driver).
Click to expand...
Click to collapse
nope no exclamation mark. google USB driver installed too
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muzab a said:
nope no exclamation mark. google USB driver installed too
Click to expand...
Click to collapse
Are you able to shut the phone off? If so, shut it off, wait 10 minutes, then try it again.
Follow Google's instructions exactly on the Official Google Pixel Update and Software Repair or Official Google Android Flash Tool web page.
Try another USB port.
Try another USB cable.
If a desktop PC, try one on the back instead of the front - although I think this has been making less and less of a difference in recent years.
Try rebooting the PC/laptop.
Have a spare PC/laptop to try fresh?

roirraW edor ehT said:
Are you able to shut the phone off? If so, shut it off, wait 10 minutes, then try it again.
Follow Google's instructions exactly on the Official Google Pixel Update and Software Repair or Official Google Android Flash Tool web page.
Try another USB port.
Try another USB cable.
If a desktop PC, try one on the back instead of the front - although I think this has been making less and less of a difference in recent years.
Try rebooting the PC/laptop.
Have a spare PC/laptop to try fresh?
Click to expand...
Click to collapse
cant tell if phone is shut off or not, but it is a black screen and have tried power button and vol up and down for 30 sec (but no indication that its force shut off), tried another cable and another laptop and same symptoms.

muzab a said:
cant tell if phone is shut off or not, but it is a black screen and have tried power button and vol up and down for 30 sec (but no indication that its force shut off), tried another cable and another laptop and same symptoms.
Click to expand...
Click to collapse
I think it's time that you need to contact Google, unfortunately. Unless someone else has some better ideas. Sorry to hear.

muzab a said:
cant tell if phone is shut off or not, but it is a black screen and have tried power button and vol up and down for 30 sec (but no indication that its force shut off), tried another cable and another laptop and same symptoms.
Click to expand...
Click to collapse
Try just power button for 30-45 seconds.
Long shot idea here.
Plug the phone into the charger, see if you get a charging symbol (indicating it is off).
If no charging symbol, should indicate device is still on, allow battery to run out. After a day or two, start plugging in the device momentarily to see if charging animation comes up.
Maybe after shutting down/running out of battery, you can recharge and get into bootloader?
Like I said, long shot idea..
Best of luck!

Az Biker said:
If no charging symbol, should indicate device is still on, allow battery to run out. After a day or two, start plugging in the device momentarily to see if charging animation comes up.
Maybe after shutting down/running out of battery, you can recharge and get into bootloader?
Click to expand...
Click to collapse
I agree. I have definitely had to do something similar, I believe with my LG G3 once or twice. Had to turn it off or let it die, then leave it alone for a while. Sounds crazy, but whatever works...

roirraW edor ehT said:
I agree. I have definitely had to do something similar, I believe with my LG G3 once or twice. Had to turn it off or let it die, then leave it alone for a while. Sounds crazy, but whatever works...
Click to expand...
Click to collapse
When they switched to non-removable batteries and you had to let it die instead of simply pulling the battery
Good times

Az Biker said:
Try just power button for 30-45 seconds.
Long shot idea here.
Plug the phone into the charger, see if you get a charging symbol (indicating it is off).
If no charging symbol, should indicate device is still on, allow battery to run out. After a day or two, start plugging in the device momentarily to see if charging animation comes up.
Maybe after shutting down/running out of battery, you can recharge and get into bootloader?
Like I said, long shot idea..
Best of luck!
Click to expand...
Click to collapse
Thanks will try this. I have spoken to google to get a replacement but hopefully i can get this current one working again

This isn't the kind of mis-flash I'd expect a phone to survive. Pixels tend to accept whatever firmware you throw at them with practically zero version or compatibility checks. In your case, going from a Qualcomm to a Samsung bootloader is likely fatal.
I'm surprised it even shows a device. Maybe a rescue path, but I wouldn't even know where to begin with drivers if generics aren't good enough. If you aren't getting a "fastboot devices" response, that's game over. How did you flash this in the first place? How far did it get?

just a heads up, that link under pixel 6 pro Global is still incorrect and is pointing to pixel 5a

LLStarks said:
This isn't the kind of mis-flash I'd expect a phone to survive. Pixels tend to accept whatever firmware you throw at them with practically zero version or compatibility checks. In your case, going from a Qualcomm to a Samsung bootloader is likely fatal.
I'm surprised it even shows a device. Maybe a rescue path, but I wouldn't even know where to begin with drivers if generics aren't good enough. If you aren't getting a "fastboot devices" response, that's game over. How did you flash this in the first place? How far did it get?
Click to expand...
Click to collapse
wasn't familiar with the p6 pro codename so when i used the link under the XDA article i guess i didn't pay attention to the name of the file. Lesson learnt

Reported it and it's fixed now.

@muzab a
Kindly share the hardware ID of the USB Serial Device.
Since the Pixel 6 family's Google Tensor silicon is somewhat based on the Exynos chipset, it could be possible to use the Exynos hard brick recovery method to revive the device (context: 1, 2).
If possible, initiate the replacement process. But discovering a community-supported method for unbricking these devices would be great. For your information, we never got our hands on the low-level firmware packages for the older Pixels with Snapdragon family of SoCs.