Database Users

Trouble / Brick? like this how to fix?

Hello, I got trouble like this when I tried to restore to factory setting, I never do something modding like rooting or something at my tatto.
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Help me plz .... I'm confused ...

That ain't no brick. You're in the recovery console. You have to hit a buton combination to get out of it.
Press one of the volume keys together with the power on button (red phone). I think it was those. Could be another combo though.

Still not working sir I used vol down + power not happend anything, when vol up + power my tattoo start blank screen and green led indicator only ...

Hy!
I can (very cheap) buy a HTC Tattoo which is broken.
The problem is (seller says) : When he try to turn on HTC Tattoo its just vibrating.
Can anyone say me is it hardware or software problem?
(Sorry for my bad english I am from Croatia.)

Hi, the easiest option is to remove the battery n replace it, then turn the phone on. The other option is to keep pressing the buttons home and call end, together.
Mithun.

mstaglicic said:
Hy!
I can (very cheap) buy a HTC Tattoo which is broken.
The problem is (seller says) : When he try to turn on HTC Tattoo its just vibrating.
Can anyone say me is it hardware or software problem?
(Sorry for my bad english I am from Croatia.)
Click to expand...
Click to collapse
Hi, is the display working? Well, there might be many defects in the phone or might not be... its like a gamble, you can buy the phone and get it repaired, it might cost you a lot. The call is yours.

mewmewmew said:
Still not working sir I used vol down + power not happend anything, when vol up + power my tattoo start blank screen and green led indicator only ...
Click to expand...
Click to collapse
Hi, the easiest option is to remove the battery n replace it, then turn the phone on. The other option is to keep pressing the buttons home and call end, together.
Mithun.

Mithun_srk05 said:
Hi, is the display working? Well, there might be many defects in the phone or might not be... its like a gamble, you can buy the phone and get it repaired, it might cost you a lot. The call is yours.
Click to expand...
Click to collapse
I'dont know is display working.
But it seems to me like a software problem.
Is there a hard reset or turning Tattoo in DFU mode (something like that) for flashing?
Thank you for answering.

help...
help... mine is like that too.. now i can't make goldcard:
F:\tatoo\tools>adb shell cat /sys/class/mmc_host/mmc1/mmc1:*/cid
adb server is out of date. killing...
* daemon started successfully *
error: device not found
when i try to run RUU_Click_HTC_WWE_1.67.405.6_WWE_release_signed_NoDriver.exe
i get ERROR [170]: USB CONNECTION ERROR
I've downloaded (recovery-RA-tattoo-v1.6.2.img) but i don't know how to flash it...

If you cant get your adbd on the phone working, you could try to go over jtag to get a shell. But first download the android sdk from google and try the adb in there.

little development....
I managed to get these options(see attachment) pressing HOME+END after boot, but i can't select any options...
I tried to press every button and i can't enable the selection or move up/down the selection...
Some help here please...

mstaglicic said:
I'dont know is display working.
But it seems to me like a software problem.
Is there a hard reset or turning Tattoo in DFU mode (something like that) for flashing?
Thank you for answering.
Click to expand...
Click to collapse
Sorry for the late response, you can go to the boot screen by pressing the home button and end button together... This method will only work if the phone is rooted. Else, create a Gold card and get into the fast boot mode by pressing vol down and end button simultaneously lemme know if it worked.

madaleno said:
I managed to get these options(see attachment) pressing HOME+END after boot, but i can't select any options...
I tried to press every button and i can't enable the selection or move up/down the selection...
Some help here please...
Click to expand...
Click to collapse
Madaleno, looking at the attachment it shows that your phone is not rooted, which means that you cant apply update via SD card.. it will give u an error message. Create a gold card by grabbing a smart phone from someone, it can be windows mobile or android based.... Once a gold card is created, you can flash a stock ROM. To navigate on the menu, based on ur attachment, use volume up and down keys and call button to select.

If it is not rooted maybe you still have warranty for the phone so you can send it to free service.

Well... no warranty...
And volume up/down does nothing...

madaleno said:
Well... no warranty...
And volume up/down does nothing...
Click to expand...
Click to collapse
You don't need your tattoo to make a gold card.
Ask someone with a Android device, and put you sd card and do it.
Cheers

Got GOLD!
I've used a symbian to read CID and created a goldcard
Can someone give me some guidelines what to do next?

With your phone turned off, press power + volume down buttons at the same time.
Then wait a litle and press back until appears "FASTBOOT" in the screen.
Then connect the usb cable and flash the stock ROM.
Cheers

Zecanilis said:
With your phone turned off, press power + volume down buttons at the same time.
Then wait a litle and press back until appears "FASTBOOT" in the screen.
Then connect the usb cable and flash the stock ROM.
Cheers
Click to expand...
Click to collapse
I pressed "Volume down"+"End" for 1 second and then keep "back" pressed and i get the same screen as post #1 :

You don't keep back pressed.
only press it a few times.

Recovery from a completely dead phone / captivate with no power

This should be a sticky or added to a existing sticky.
Do you get no power when you turn on your phone? Nothing shows up on the screen at all. You have the worst brick possible that is recoverable. I wished this post came out before I did a warranty swap.
Here's how to fix: Credit goes to OP
- You need Odin program before starting.
1. Remove the battery, external SD card and SIM card.
2. Wait 10 seconds.
3. Open odin3
4. Insert battery.
5. Connect usb cable.
6. HOLD VOL+ and VOL- while plugging in USB
Got download screen and flashed with ODIN..
Let ODin finish.
*** This program recovered my dead phone with no power, nothing shows up on my screen. - Dead and also a stuck boot up screen.
I saw another post that has the similar set of instructions 6. HOLD VOL+ and VOL- and then press the power button. Nothing happens.
I am curious how people this post has helped. Can you respond when you these directions gets your phone up. Thank you.

this is cOLD. and has been posted numerous times.
A.K.A. Check [STOCK] Odin 1 click. and this does not recover from a completely dead phone that doesn't have button combo to download mode.

I thought that was what we all did to get into d/l

Some tools developer or reseller said that the phone is bricked,
and need Jtag tool to do recovery.
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Jtag is usefull for empty or totally corrupted ROM recovery.
But if you see this, your phone is FAR from brick !
Just press the keys, bring it back to download mode
Then plug to cable and flash a working firmware again.
No special tools is needed,
No need to waste time and money send for repair,
Don't waste your good phone and don't break it for jtag.

johan8 said:
Some tools developer or reseller said that the phone is bricked,
and need Jtag tool to do recovery.
Jtag is usefull for empty or totally corrupted ROM recovery.
But if you see this, your phone is FAR from brick !
Just press the keys, bring it back to download mode
Then plug to cable and flash a working firmware again.
No special tools is needed,
No need to waste time and money send for repair,
Don't waste your good phone and don't break it for jtag.
Click to expand...
Click to collapse
as my case....but i still can't enter download mode or recovery mode
and now... my pc can't detect my phone again...
what should i do now OMG

Are you seeing the Phone-!-PC symbol? I was in a situation where my phone wouldn't accept the the up/down key press to enter download mode. I ended up having to make a jig which basically will force the phone into download mode. You can search the forums on how to make one.

junktzu said:
Are you seeing the Phone-!-PC symbol? I was in a situation where my phone wouldn't accept the the up/down key press to enter download mode. I ended up having to make a jig which basically will force the phone into download mode. You can search the forums on how to make one.
Click to expand...
Click to collapse
yea...ur right...im seeing the Phone-!-PC symbol,so...must make a jig?

linggo said:
yea...ur right...im seeing the Phone-!-PC symbol,so...must make a jig?
Click to expand...
Click to collapse
No, if you see that symbol, you can recover using the method in first post to get to download mode. That is how I got past it.

loraque said:
No, if you see that symbol, you can recover using the method in first post to get to download mode. That is how I got past it.
Click to expand...
Click to collapse
not work so far...

This is what most people always do to enter dl mode.
However, many phones shipped without the button combos needed for it to work. In that case it is possible to make a USB jig to trigger download mode manually. see this thread: http://forum.xda-developers.com/showthread.php?t=819551

:-(
Sent from my X10i using XDA App

Deca4 said:
This should be a sticky or added to a existing sticky.
Do you get no power when you turn on your phone? Nothing shows up on the screen at all. You have the worst brick possible that is recoverable. I wished this post came out before I did a warranty swap.
Here's how to fix: Credit goes to OP
- You need Odin program before starting.
1. Remove the battery, external SD card and SIM card.
2. Wait 10 seconds.
3. Open odin3
4. Insert battery.
5. Connect usb cable.
6. HOLD VOL+ and VOL- while plugging in USB
Got download screen and flashed with ODIN..
Let ODin finish.
*** This program recovered my dead phone with no power, nothing shows up on my screen. - Dead and also a stuck boot up screen.
I saw another post that has the similar set of instructions 6. HOLD VOL+ and VOL- and then press the power button. Nothing happens.
I am curious how people this post has helped. Can you respond when you these directions gets your phone up. Thank you.
Click to expand...
Click to collapse
I have the same problem but I cannot get it to download mode. My phone is completely dead no power no sign of life. The only thing I notice is when i put the battery into the phone for about 15 minutes the phone is getting hot so I don't know if this is a common problem for bricked phone.

MobileXT said:
I have the same problem but I cannot get it to download mode. My phone is completely dead no power no sign of life. The only thing I notice is when i put the battery into the phone for about 15 minutes the phone is getting hot so I don't know if this is a common problem for bricked phone.
Click to expand...
Click to collapse
Try these steps to see if you can get the red text to show up. If you can, you are still recoverable using the steps.
http://forum.xda-developers.com/showthread.php?p=9330685&highlight=red+text#post9330685

linggo said:
not work so far...
Click to expand...
Click to collapse
I had the exact same "phone - ! - PC" brick screen and vol up + vol down + power only took me to "unknown upload mode". I eventually figured out by myself that holding ONLY vol down + power for 10 sec is what takes you to download mode from that particular screen.
Summary: Anyone who's getting "Phone--!--PC" and the three-button combo takes you to "unknown upload mode", try holding vol down + power for 10 seconds.

dead phone
The guys just turned off my phone and didn’t turn on, didn’t enter into the backup, I can’t flash through ODIN because even after installing the drivers, the computer sees the phone as a ULC1 device and cannot install the drivers needed for the phone, who had such a problem decide? samsung j100fn

i discoverd new way to fix BLACK SCREEN OF DEATH ...

hello
you know the last method to press vol up + vol down + power
thats dosent work know with 2.2 or 2.2.1 ..
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so i improved it to be like that = vol up+ vol down +power and wait the screen gonna be black then back to ! then go black again when go black again do the download combo power+ home + vol down ..
it will enter download mode and flash your rom and have fun ..
u don't need to send it to Samsung or buy usb jig
note: maybe this method will not work on devices cant do the 3 button combo
or the devices has a corrupted boot loader but i tried it twice ..

trok2008 said:
hello
you know the last method to press vol up + vol down + power
thats dosent work know with 2.2 or 2.2.1 ..
so i improved it to be like that = vol up+ vol down +power and wait the screen gonna be black then back to ! then go black again when go black again do the download combo power+ home + vol down ..
it will enter download mode and flash your rom and have fun ..
u don't need to send it to Samsung or buy usb jig
note: maybe this method will not work on devices cant do the 3 button combo
or the devices has a corrupted boot loader but i tried it twice ..
Click to expand...
Click to collapse
Your description is really hard to understand.The screen you are posting about means NO Death.Actually i have had it a few times,and download mode is accessible from this screen,recovery mode is not though.This screen refers to a bad connection while flashing which is usually not harmful(unless you are updating bootloaders) and it is easy to recover from it.

tackygr said:
Your description is really hard to understand.The screen you are posting about means NO Death.Actually i have had it a few times,and download mode is accessible from this screen,recovery mode is not though.This screen refers to a bad connection while flashing which is usually not harmful(unless you are updating bootloaders) and it is easy to recover from it.
Click to expand...
Click to collapse
Agreedwith you.

Wow....a little bit of knowledge is a dangerous thing.
The second poster is right...you didn't actually do what you thought you did, whatever it is you thought you did as the first post is nearly gibberish. Read a little more on the different states your phone can be in and you will understand.
Sent from my GT-I9000 using XDA Premium App

trok2008 said:
you know the last method to press vol up + vol down + power
..
Click to expand...
Click to collapse

Umm.. Maybe its because you were pressing the wrong keys in the first place. I'm surprised you got that combo working in 2.1 (which is what you are implying)..
Also, the picture you showed I've had a few times, and I never needed a jig. You simply pull the power, use Home+Vol down+power, and THEN plug the phone in by USB. JIG's are RARELY needed, and in some cases, people who think they need a jig might just have a faulty phone, or may simply not be willing to experiment to get it working again.
Sorry, its good that you are contributing, but I myself recall posting similar posts to the forum many times in the past, and many others have as well. But nevertheless, good to hear that you got it working!

Auzy said:
Umm.. Maybe its because you were pressing the wrong keys in the first place. I'm surprised you got that combo working in 2.1 (which is what you are implying)..
Also, the picture you showed I've had a few times, and I never needed a jig. You simply pull the power, use Home+Vol down+power, and THEN plug the phone in by USB. JIG's are RARELY needed, and in some cases, people who think they need a jig might just have a faulty phone, or may simply not be willing to experiment to get it working again.
Sorry, its good that you are contributing, but I myself recall posting similar posts to the forum many times in the past, and many others have as well. But nevertheless, good to hear that you got it working!
Click to expand...
Click to collapse
How boot on dowload mode from this screen? without using usb jig? the 3 button doesn't work for me
---------- Post added at 09:49 PM ---------- Previous post was at 09:44 PM ----------
tackygr said:
Your description is really hard to understand.The screen you are posting about means NO Death.Actually i have had it a few times,and download mode is accessible from this screen,recovery mode is not though.This screen refers to a bad connection while flashing which is usually not harmful(unless you are updating bootloaders) and it is easy to recover from it.
Click to expand...
Click to collapse
Hi mate !
How u boot on download mode from the black screen? without usb jig, the 3 button trick doesn't work for me :crying:

Nexus 4 wont start

Hello
The device was working nicely until a month ago. Then suddenly, it stopped turning on.
Since yesterday, I've tried the methods suggested on http://forums.androidcentral.com/google-nexus-4/312151-solved-nexus-4-won-t-turn-charge.html, but that has not solved the problem. Only that now, the google screen and then the cross screen comes up, but then nothing. It stays that way forever.
I tried using Odin to connect, then nexus root toolkit, but both donot connect to the device.
Please help.
thanks

tahrang said:
Hello
The device was working nicely until a month ago. Then suddenly, it stopped turning on.
Since yesterday, I've tried the methods suggested on http://forums.androidcentral.com/google-nexus-4/312151-solved-nexus-4-won-t-turn-charge.html, but that has not solved the problem. Only that now, the google screen and then the cross screen comes up, but then nothing. It stays that way forever.
I tried using Odin to connect, then nexus root toolkit, but both donot connect to the device.
Please help.
thanks
Click to expand...
Click to collapse
You should see if you can do a factory reset. Hold volume down and turn the phone on, it should go into bootloader mode. From there choose recovery mode with the volume keys. Once you're at a screen saying 'no command' hold volume up and tap the power button, then select factory reset.

No, it doesnt go into the bootloader mode at all.

My Nexus 4 is on and in the boot animation. It's been in this animation for about 30 minutes now and I don't know what's wrong with it. I cleared the Cache and did a factory reset. Other then that it seems to work fine. Running Lollipop.

Anyone?

no factory reset menu
DrFredPhD said:
You should see if you can do a factory reset. Hold volume down and turn the phone on, it should go into bootloader mode. From there choose recovery mode with the volume keys. Once you're at a screen saying 'no command' hold volume up and tap the power button, then select factory reset.
Click to expand...
Click to collapse
Hello
Thanks for that. Today, I could get into the bootloader mode, and went into recovery mode. The screen showed the droid with an exclamation mark. I tried the volume up button and the powerbutton tap, but nothing happened. So I stopped pressing the volume button and tapped the power button, and the phone is stuck on the cross screen again.:crying:
Please help.

tahrang said:
Hello
Thanks for that. Today, I could get into the bootloader mode, and went into recovery mode. The screen showed the droid with an exclamation mark. I tried the volume up button and the powerbutton tap, but nothing happened. So I stopped pressing the volume button and tapped the power button, and the phone is stuck on the cross screen again.:crying:
Please help.
Click to expand...
Click to collapse
It's actually as follows to get into recovery.
- Press and hold Volume Up and Volume Down
- Press and hold the power button until you reach the boot-loader
- Use volume keys to select 'Recovery Mode'
- Press and hold Power button for about 2 seconds and then tap the Volume UP button
- Continue through your Recovery Options as normal
* Also, I think pressing and holding power button powers the device off.
Correct me if I'm wrong and good luck!

buffering.... said:
It's actually as follows to get into recovery.
- Press and hold Volume Up and Volume Down
- Press and hold the power button until you reach the boot-loader
- Use volume keys to select 'Recovery Mode'
- Press and hold Power button for about 2 seconds and then tap the Volume UP button
- Continue through your Recovery Options as normal
* Also, I think pressing and holding power button powers the device off.
Correct me if I'm wrong and good luck!
Click to expand...
Click to collapse
Volume up + volume down + power button goes to download now
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Sent from my SM-P600 using Tapatalk

Ok I did the following:
1. press volume down and power buttons
2. insert usb cable
3. the phone went into bootloader - i went in recovery mode and pressed power button
4. the droid with exclamation mark came up
5. pressed volume up + volume down + power buttons
6. factory reset menu came up
7. did factory reset.
Hurray!
Right now, am charging the phone. will update what happens next.
thanks

tahrang said:
Volume up + volume down + power button goes to download now
Sent from my SM-P600 using Tapatalk
Click to expand...
Click to collapse
I think I see the problem...It happened to me once, too. I just kept retrying and it eventually worked. I'm not sure exactly, but try doing the following commands;
- Press and hold the Volume Up and Volume Down keys
- Press and hold the Power button
- Release the Volume key
*And once again, good luck! | If all else fails, try pulling the battery and leaving it unplugged for a few minutes.
---------- Post added at 02:26 AM ---------- Previous post was at 02:23 AM ----------
tahrang said:
Volume up + volume down + power button goes to download now
Sent from my SM-P600 using Tapatalk
Click to expand...
Click to collapse
Wait.. Are you in the Boot-loader and trying the Recovery commands and that pops up, or are you trying to get into the Boot-loader. *Sorry for the confusion, my fault.

well, i listed my steps above. that is what i followed, and now the phone is working ok. it is still charging.

Galaxy A20 - BRICKED NO DOWNLOAD MODE

Hi All,
Apologies if this is not posted in the right forum - ADMINS please move if applicable.
Thank you for all the great MODS and Support received over the years, you have supplied me with great reading material and DIY tips.
I have been flashing and modding since the Galaxy S2 and had my fair share of bricked devices , which I always fixed, but this one baffles me as I did not do anything to it, yet!
Little Background
Bought my wife a new Samsung Galaxy A20 (SM-A205F/DS), she dropped it :silly: and screen got broken.
Order new screen and replaced it, before closing I tested device tested and everything was working 100%
Phone worked like it should, then I closed it and now the phone is not booting up.
What have I tried
- Tried the Recovery Mode (Power + Volume Up) - No Go
- Tried to get Download Mode (Power + Volume Up + Volume Down) - No Go
- Tried battery reset (Power + Volume Down) - Phone Starts but gets Black Screen and turns OFF
- Tried battery removal (Remove and Re-connect Battery on Main Board) - No Go
- Tried Data Cable Start - No Go
- Tried ODIN - No Go - Does not detect Phone
- Tried FlashTool - No Go - Does not detect Phone and also does not have MediaTek Chipset
- Tried ADB and Fastboot - Device not detected
Error Code Received
The below only flashes on for 1 sec and ONLY appears when pressing the Power Button - had to record and take photo
Code:
#Reboot Recovery Cause is [BL:Recovery Mode Set by key]#
Support SINGLE-SKU
#Block-Based OTA
Supported API: 3
#MANUAL MODE v1.0.0#
Rebooting....
Picture of ERROR
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
If the image is not working, herewith link
Code:
"https://drive.google.com/open?id=1iCmEF2bzDbCKu4Y2T928hijqbJKozxCb"
Guys I really need your help on this, need to make the wife happy - can anyone point me in the direction of how to get the software back onto this device again.
Regards
Your Friend in Need

Hold all 3 buttons
When it responds release power and very quickly plug in to computer

physwizz said:
Hold all 3 buttons
When it responds release power and very quickly plug in to computer
Click to expand...
Click to collapse
Hi physwizz, did try your suggestion and no go - also tried with different combinations, any other suggestions

X85258X said:
Hi physwizz, did try your suggestion and no go - also tried with different combinations, any other suggestions
Click to expand...
Click to collapse
Buy your wife a basketball and throw the phone away

physwizz said:
Buy your wife a basketball and throw the phone away
Click to expand...
Click to collapse
Is there nothing else you can do, no jtag or pin shorting, come on guys it can not be that hard

physwizz said:
Hold all 3 buttons
When it responds release power and very quickly plug in to computer
Click to expand...
Click to collapse
How long should you keep the buttons pressed

X85258X said:
How long should you keep the buttons pressed
Click to expand...
Click to collapse
Until the phone starts to respond

physwizz said:
Until the phone starts to respond
Click to expand...
Click to collapse
It responds after 15 seconds, showing the Samsung A20 Logo Secured by Knox, how long should you keep the Volume Up + Volume Down Buttons

If the screen turns on plug it right into the pc and see if it can be detected by Odin or by "adb devices" and try to recover it

Maybeyou said:
If the screen turns on plug it right into the pc and see if it can be detected by Odin or by "adb devices" and try to recover it
Click to expand...
Click to collapse
Hey, I have tried that already, the screen switches on and stays on for +-20 seconds and then turns off before displaying the Samsung Logo and if you press the Power Button again it displays the Error Code as per my original post and switches off, if you press any other button it does nothing

physwizz said:
Hold all 3 buttons
When it responds release power and very quickly plug in to computer
Click to expand...
Click to collapse
I got it to work with your suggestion but with a twist.
For the device to get into download mode you must have the USB Cable already connected to your phone and pc.
Odin detects device, will flash software later and give feedback

X85258X said:
I got it to work with your suggestion but with a twist.
For the device to get into download mode you must have the USB Cable already connected to your phone and pc.
Odin detects device, will flash software later and give feedback
Click to expand...
Click to collapse
Great work
Yes I plugged it in pretty quick when I did it
Sometimes it doesn't reboot if it's plugged in
---------- Post added at 09:50 PM ---------- Previous post was at 09:23 PM ----------
Try this now that you're in
https://forum.xda-developers.com/galaxy-a20/how-to/android-10-q-guide-a20-t4095589

X85258X said:
I got it to work with your suggestion but with a twist.
For the device to get into download mode you must have the USB Cable already connected to your phone and pc.
Odin detects device, will flash software later and give feedback
Click to expand...
Click to collapse
Downloaded the firmware to the phone, all went 100% no errors.
Phone rebooted, showed the Blue Screen Android Dude (Installing System) for 1 second and switches off.
Tried to post Picture and Video links but I am not allowed Yet
Now we have a new challenge

physwizz said:
Try this now that you're in
https://forum.xda-developers.com/galaxy-a20/how-to/android-10-q-guide-a20-t4095589
Click to expand...
Click to collapse
Ok cool, will give this a bash a little later and give feedback, will see if I can upload video and images to google drive.
Must OEM Unlocker be enable, if so we might have problems

Picture of Screen after successful flash

physwizz said:
Great work
Yes I plugged it in pretty quick when I did it
Sometimes it doesn't reboot if it's plugged in
---------- Post added at 09:50 PM ---------- Previous post was at 09:23 PM ----------
Try this now that you're in
https://forum.xda-developers.com/galaxy-a20/how-to/android-10-q-guide-a20-t4095589
Click to expand...
Click to collapse
Hey, ok I tried all different stock firmwares - from earliest to latest and all result with same error state as per the original post.
Code:
#Reboot Recovery Cause is [BL:Recovery Mode Set by key]#
Support SINGLE-SKU
#Block-Based OTA
Supported API: 3
#MANUAL MODE v1.0.0#
Rebooting....
Is there anything else we can try or is this now just an expensive paperweight

physwizz said:
Great work
Try this now that you're in
https://forum.xda-developers.com/galaxy-a20/how-to/android-10-q-guide-a20-t4095589
Click to expand...
Click to collapse
I have tried, but as suspected OEM Lock is still Active and there is currently no way of disabling it, as I do not have access to the main os.

Im sorry, if you used Odin and unchecked auto reboot, you have to hold power and down for 10 seconds, then immediately hold volume down and power for recovery then boot to system. If installing twrp that is. That screen doesn't change after a flash with auto reboot off. I'd reflash and reboot to recovery from what I'm seeing
Or
If your good with wires you can short pins 4 and 5 using 333k resistor and plug into phone, it'll get you to download mode

Same Exact Problem
literally the same exact problem / symptoms.
It happened to me immediately after an automatic system update
it seems to me that the aftermarket screen somehow lost full compatibility.
i used odin and also tried installing all the available updates and they were successful but issue remained
please let me know if you come up with a solution i will do the same if i find one.

X85258X said:
Hey, I have tried that already, the screen switches on and stays on for +-20 seconds and then turns off before displaying the Samsung Logo and if you press the Power Button again it displays the Error Code as per my original post and switches off, if you press any other button it does nothing
Click to expand...
Click to collapse
I have the same issue right now. Without the error message displayed.
The phone can not boot into download mode. I tried all the things mentioned in this thread.
Same Exact Problem
literally the same exact problem / symptoms.
It happened to me immediately after an automatic system update
it seems to me that the aftermarket screen somehow lost full compatibility.
i used odin and also tried installing all the available updates and they were successful but issue remained
please let me know if you come up with a solution i will do the same if i find one.
Click to expand...
Click to collapse
It seems like it could really a problem with the aftermarket screen. My A20 has a new screen and maybe thats the same probem.
Can anyone help us?