Currently `v7.x` builds are not released to stable due to users upgrading from `v6.x` being left with an unbootable device _if the bootloader is locked_. A user can manually upgrade to `v7.x beta` *if they do a factory reset* or if the device is not locked by using the FP4 beta build with the name `iode-7.x-YYYYMMDD-FP4-ota-bricks-device-when-upgrade-from-v6-bootloader-relocked.zip` from the [iodéOS beta repository](https://gitlab.iode.tech/ota/betas/). If a user with a locked bootloader fails to factory reset before applying the update and it is then left unbootable, they can either go to `Recovery` and perform the factory reset, or instead attempt to boot "about 6-7 times without success, after which the system will revert to the `v6.x` build and should boot thanks to the a/b partition scheme." After booting back to `v6.x`, they can save all their data, perform a factory reset, and once again attempt to manually update to the `v7.x` beta build. As a further clarification, there should be no problem with having a locked bootloader with `v7.x`, it is just that *if it was locked with `v6.x` then a factory reset it needed to move to `v7.x`*. At this point we can see if a possible future firmware update by Fairphone will resolve the issue, but otherwise we don't know of other ways forward. If others find any LineageOS-based builds that can migrate from an Android 15 base to an Android 16 base when the bootloader is locked without performing a factory reset, please let us know. Here is the thread discussing the issue where users can give feedback: https://community.iode.tech/t/fp4-iode-7-status-issue-tracker/7653