I wrote some new code, so now you can upload offline images from a web browser! Finally the (old) poi can take advantage of the hack I did to have up to 52 offline images displaying.
First, install the latest SmartPoi firmware (otherwise the web upload won’t work) https://github.com/tomjuggler/SmartPoi-Firmware
Then clone this repository here https://github.com/tomjuggler/SmartPoi-js-utilities to your computer and follow the instructions in the README. It all runs in a web browser, nothing to install or download (currently tested working on 36px poi using Firefox browser).
Thanks to Andreas for giving me the reason to make this – look out for updates to the SmartPoi project, more control from a web browser coming soon. I think I already mentioned this in my previous blog post – I am a bit tired of fighting with Android!