What platform are you building for?
Android
What framework are you building with?
Cordova
What is your build ID?
70a43823-316a-49d3-a067-db800fbaf3ff
What is your error message?
Is it possible to configure VoltBuilder to generate the APK already signed with V1 (instead of V2)?
If not, is there a recommended method to remove or avoid including the specific files mentioned in the MANIFEST.MF that are causing the checksum errors?
By the way, we use NSB Appstudio for coding and then VoltBuilder to generate the apk file.
Please describe the issue:
Hello,
I need assistance regarding the compilation and signing process of my application.
When we compile our app in Release mode, VoltBuilder generates the APK using signature scheme V2. However, to distribute the application on a third-party platform, we are required to provide an APK signed using signature scheme V1.
To work around this limitation, I generated a separate V1 keystore and I am currently re-signing the APK manually using the following command:
jarsigner -keystore ntc-keystore.jks …
I am not completely sure if this manual re-signing is what caused the checksum issue reported by the third-party platform, but it is possible since the APK is modified when re-signed.
I would like to know:
Is it possible to configure VoltBuilder to generate the APK already signed with V1 (instead of V2)?
If not, is there a recommended method to remove or avoid including the specific files mentioned in the MANIFEST.MF that are causing the checksum errors?
Below is the report we received from the third-party platform:
Third-party report:
“All the files mentioned in the log below are causing errors during the third level signing process.
The possible reasons are:
• Not using packaging options to remove extra files in the META-INF folder
• Exceeding the 70-character limit per line in MANIFEST.MF; line breaks must be used for any content longer than 70 characters
In theory, these files are located somewhere in your manifest.
com.netcontroll.pdv-11110.apk … signed: 1x=True, 2x=True
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jqwidgets/styles/images/smoothness/ui-bg_glass_95_fef1ec_1x400.png,assets/www/jqwidgets/styles/images/smoothness/ui-bg_flat_75_ffffff_40x100.png,assets/www/jqwidgets/styles/images/darkness/ui-icons_cccccc_256x240.png,assets/www/jqwidgets/styles/images/redmond/ui-bg_glass_75_d0e5f5_1x400.png,assets/www/jqwidgets/styles/images/darkness/ui-icons_a83300_256x240.png’,), <traceback object at 0x7fdb79a69440>)
Exception while verifying /opt/clover/prod3xsign/apks/downloaded-2025-11-07_22.01.02/com.netcontroll.pdv-11110.apk
”
Thank you in advance, and I look forward to your guidance on how to resolve this issue.