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[Please help] Hard Bricked B3-A20 Acer Tablet No Recovery

[Please help] Hard Bricked B3-A20 Acer Tablet No Recovery

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TLKiller
TLKiller
TLKiller
Junior Member
28
12-11-2017, 12:16 AM
#51



(11-11-2017, 09:00 PM)X3non
(11-11-2017, 10:14 AM)TLKiller I flashed with fastboot, it said OK but I still having the A30 recovery, so I tried with SP flash tool and it says file must be signed, see screenshot, how can I disable the signed verification or whatever it's called?

retry flashing using SPft -v5.1532.00 or v5.1516 @ https://www.hovatek.com/forum/thread-13970.html
lets know the outcome
-with v5.1516 I always get error
-with v5.1532 it flashed fine, but after flashing, tablet is completely "dead" even after flashing the original recovery and everything
now I flashed again everything with v5.1728  and tablet works, but stills impossible to flash the custom recovery, I still getting the "sign header not found" error
hovatek
hovatek
hovatek
Administrator
49,570
13-11-2017, 04:06 PM
#52
(12-11-2017, 12:16 AM)TLKiller -with v5.1516 I always get error
-with v5.1532 it flashed fine, but after flashing, tablet is completely "dead" even after flashing the original recovery and everything
now I flashed again everything with v5.1728  and tablet works, but stills impossible to flash the custom recovery, I still getting the "sign header not found" error

Hmm..
OK.
Please, attach a full screenshot of the error message

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X3non
X3non
X3non
Recognized Contributor
22,062
13-11-2017, 04:29 PM
#53
(12-11-2017, 12:16 AM)TLKiller -with v5.1516 I always get error
-with v5.1532 it flashed fine, but after flashing, tablet is completely "dead" even after flashing the original recovery and everything
now I flashed again everything with v5.1728  and tablet works, but stills impossible to flash the custom recovery, I still getting the "sign header not found" error

are you saying you flashed ONLY recovery.img using v5.1532 and the device went totally dead?
and you still flashed the B3-A30 rom still using v5.1532 and the device still remained dead?

in fastboot, try this command
Code:

fastboot boot recovery.img
TLKiller
TLKiller
TLKiller
Junior Member
28
13-11-2017, 09:50 PM
#54
(13-11-2017, 04:29 PM)X3non
(12-11-2017, 12:16 AM)TLKiller -with v5.1516 I always get error
-with v5.1532 it flashed fine, but after flashing, tablet is completely "dead" even after flashing the original recovery and everything
now I flashed again everything with v5.1728  and tablet works, but stills impossible to flash the custom recovery, I still getting the "sign header not found" error

are you saying you flashed ONLY recovery.img using  and the device went totally dead?
and you still flashed the B3-A30 rom still using v5.1532 and the device still remained dead?

in fastboot, try this command
Code:

fastboot boot recovery.img

Exactly, I flashed only the recovery from file you sent me ([Hovatek] TWRP for Acer B3-A20.zip) using SP v5.1532 then it died completely, After that I flashed the A30 whole rom and still not working, so finally I flashed the A30 rom with v5.1728 and it worked again.

Today I tried your code in fastboot and I get kernel error (see screenshot)-note that I unlocked the bootloader
Attached Files
.png
Capture.PNG
Size: 50.54 KB / Downloads: 10
hovatek
hovatek
hovatek
Administrator
49,570
14-11-2017, 11:10 AM
#55



(13-11-2017, 09:50 PM)TLKiller Exactly, I flashed only the recovery from file you sent me ([Hovatek] TWRP for Acer B3-A20.zip) using SP v5.1532 then it died completely, After that I flashed the A30 whole rom and still not working, so finally I flashed the A30 rom with v5.1728 and it worked again.

Today I tried your code in fastboot and I get kernel error (see screenshot)-note that I unlocked the bootloader

Looks like you somehow need to get the Acer B3-A20 scatter firmware
Checkout the thread @ https://www.hovatek.com/forum/thread-20706.html
This post was last modified: 14-11-2017, 11:31 AM by hovatek.

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TLKiller
TLKiller
TLKiller
Junior Member
28
14-11-2017, 04:49 PM
#56
(14-11-2017, 11:10 AM)hovatek
(13-11-2017, 09:50 PM)TLKiller Exactly, I flashed only the recovery from file you sent me ([Hovatek] TWRP for Acer B3-A20.zip) using SP v5.1532 then it died completely, After that I flashed the A30 whole rom and still not working, so finally I flashed the A30 rom with v5.1728 and it worked again.

Today I tried your code in fastboot and I get kernel error (see screenshot)-note that I unlocked the bootloader

Looks like you somehow need to get the Acer B3-A20 scatter firmware
Checkout the thread @ https://www.hovatek.com/forum/thread-20706.html

Ok, I have seen the thread but the man who is asking haven't uploaded any firmware yet, in fact, I have read his questions and looks like his knowledges of computing are a little "deficient" I'm not so sure he will be able to do a firmware backup... (I hope he does)
This post was last modified: 14-11-2017, 04:50 PM by TLKiller.
hovatek
hovatek
hovatek
Administrator
49,570
15-11-2017, 10:10 AM
#57
(14-11-2017, 04:49 PM)TLKiller Ok, I have seen the thread but the man who is asking haven't uploaded any firmware yet, in fact, I have read his questions and looks like his knowledges of computing are a little "deficient" I'm not so sure he will be able to do a firmware backup... (I hope he does)

Asking if he can and guiding him would be a good way to go don't you think?

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TLKiller
TLKiller
TLKiller
Junior Member
28
15-11-2017, 03:09 PM
#58
(15-11-2017, 10:10 AM)hovatek
(14-11-2017, 04:49 PM)TLKiller Ok, I have seen the thread but the man who is asking haven't uploaded any firmware yet, in fact, I have read his questions and looks like his knowledges of computing are a little "deficient" I'm not so sure he will be able to do a firmware backup... (I hope he does)

Asking if he can and guiding him would be a good way to go don't you think?

Oops, I have read my answer again and it sounds a little rude, sorry about that. Yes, you're right, he can also learn as I did, before last year I was a computing dummy  Big Grin  but I've learned very fast, If he needs me to share any knowledge about this tablet, I will try to help him  Sleepy
hovatek
hovatek
hovatek
Administrator
49,570
15-11-2017, 05:06 PM
#59
(15-11-2017, 03:09 PM)TLKiller Oops, I have read my answer again and it sounds a little rude, sorry about that. Yes, you're right, he can also learn as I did, before last year I was a computing dummy  Big Grin  but I've learned very fast, If he needs me to share any knowledge about this tablet, I will try to help him  Sleepy

Send him a PM and let me know if he accepts to upload his backup if done

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27-03-2021, 11:01 AM
#60



Hello.
I have a hardbricked Acer B3-A20, she is dead!
I download stock rom from acer, but i can access recovery and i cant use SP tools, the scrapper isn't compatible..
Can someone help me..
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