How to use AVBtool and a private key to sign a Unisoc (SPD) image - Page 3

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Hovatek Forum OPERATING SYSTEMS Android [Tutorial] How to use AVBtool and a private key to sign a Unisoc (SPD) image

[Tutorial] How to use AVBtool and a private key to sign a Unisoc (SPD) image

[Tutorial] How to use AVBtool and a private key to sign a Unisoc (SPD) image

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runnerGunn4r
Newbie

3

27-09-2021, 04:47 AM

#21

This worked for me on Manjaro and my Teclast T40 Plus.

lolvatveo
Senior Member

146

27-09-2021, 05:15 AM

#22

ok I know the reason and it used to be for many people because the versions you download are not stock rom or repaired rom, old version rom (this is why i flashed recovery and crashed), fake rom, broken rom scam etc. And the latest stock roms, those who get them, you have to pay to get, even the stock rom they sell. really greedy! Currently i cant fix my phone without stock rom

This post was last modified: 27-09-2021, 05:18 AM by lolvatveo.

hovatek
Administrator

50,982

27-09-2021, 12:40 PM

#23

(25-09-2021, 04:10 PM)lolvatveo my stock vbmeta is signed with rsa4096 key, can i sign magiskpatched recovery with rsa4096?

yes, you should seeing as it is what is indicated in stock vbmeta

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philps
Newbie

2

15-11-2021, 12:07 PM

#24

D:\crb_v3b10\Binaries\avbtool>python avbtool.py add_hash_footer --image boot.img --partition_name recovery --partition_size 41943040 --key verity.x509.pem --algorithm SHA256_RSA4096
avbtool.py: Adding hash_footer failed: Image size of 70062080 exceeds maximum image size of 41873408 in order to fit in a partition size of 41943040..

not work.

hovatek
Administrator

50,982

19-11-2021, 10:06 AM

#25

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(15-11-2021, 12:07 PM)philps D:\crb_v3b10\Binaries\avbtool>python avbtool.py add_hash_footer --image boot.img --partition_name recovery --partition_size 41943040 --key verity.x509.pem --algorithm SHA256_RSA4096
avbtool.py: Adding hash_footer failed: Image size of 70062080 exceeds maximum image size of 41873408 in order to fit in a partition size of 41943040..

not work.

You have boot image file and partition set as recovery.
I also trust you've already created and flashed a corresponding custom signed vbmeta

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Skorpion06
Junior Member

38

29-11-2021, 01:58 PM

#26

I want to root ZTE A5 2019, i've made a custom recovery and now i want to make it flashable with SPD Research Tool, here is the recovery:https://www.mediafire.com/folder/uvde49kcna40o/ZTE+A5+2019+Philz and here is the rom:https://drive.google.com/file/d/18e6jRrdYLX3Id7iZsw9SZCwpLawGqhpL/view Please help me with simple steps or give me patched files.

hovatek
Administrator

50,982

30-11-2021, 08:05 AM

#27

(29-11-2021, 01:58 PM)Skorpion06 I want to root ZTE A5 2019, i've made a custom recovery and now i want to make it flashable with SPD Research Tool, here is the recovery:https://www.mediafire.com/folder/uvde49kcna40o/ZTE+A5+2019+Philz and here is the rom:https://drive.google.com/file/d/18e6jRrdYLX3Id7iZsw9SZCwpLawGqhpL/view Please help me with simple steps or give me patched files.

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blaze2051
Junior Member

31

05-02-2022, 08:29 AM

#28

(13-03-2020, 05:32 PM)hovatek This guide will explain how to sign Unisoc / Spreadtrum (SPD) images (e.g boot, recovery, system etc) using a private key and AVBtool. This guide is ideal for those with vbmeta-sign.img in their firmware as such device's will only accept images signed with keys that match what's contained in the device's vbmeta partition.
....
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does you have to do this command if you trying to flash a GSI to system partition to get it to boot?

This post was last modified: 06-02-2022, 07:31 AM by hovatek.

hovatek
Administrator

50,982

06-02-2022, 07:34 AM

#29

(05-02-2022, 08:29 AM)blaze2051 does you have to do this command if you trying to flash a GSI to system partition to get it to boot?

No

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Ahmed Jubayer
Techie Member

71

22-05-2022, 08:09 PM

#30

Do i everytime need to flash a custom signed vbmeta before flashing a custom signed image?

or it's an one time process, Once I flashed the custom signed vbmeta from then I can just flash a image directly after signing that image... right?

This post was last modified: 22-05-2022, 08:09 PM by Ahmed Jubayer.

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