what are you doing?
there is no need to ugrade the OH base?
just the binding, do what‘s described in the instructions
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Latest DEV builds: 2.5.13 - 3.1.0 - README - Installation - Avdanced Users - Shelly Manager - Bugs/Features - Firmware Index - Firmware Archive - API Doc
Note: The DEV build is always newer than the version in the official Distro or the Milestone builds (SNAPSHOTs); OH Distro 2.5 will not receive updates anymore, so you have to switch to DEV build when running OH 2.5, see installation notes.