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CONTRIBUTING: Document debug installation failure

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Jules Aguillon 2022-01-15 19:03:53 +01:00
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CONTRIBUTING.md
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@ -39,3 +39,25 @@ make installd
The debug version of the application won't be removed, both versions will stay The debug version of the application won't be removed, both versions will stay
installed at the same time. installed at the same time.
## Debugging the application: INSTALL_FAILED_UPDATE_INCOMPATIBLE
`make installd` can fail with the following error message:
```
adb: failed to install _build/juloo.keyboard2.debug.apk: Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package juloo.keyboard2.debug signatures do not match previously installed version; ignoring!]
make: *** [Makefile:20: installd] Error 1
```
The application can't be "updated" because the temporary certificate has been
lost. The solution is to uninstall and install again:
```sh
adb uninstall juloo.keyboard2.debug
```
Then again:
```sh
make installd
```