This program is for editing the contents of EPUB files right on PocketBook devices. It is a shell script, so it should run on any model. It does require other programs, which are model dependent: Pi Yury Fedorchenko's text editor: zip Infozip compression program: unzip Infozip decompression program: sh_ivtool Inkview UI elements for scripts: Install zip, unzip, sh_ivtool, and the edit-epub.app script into /mnt/ext1/system/bin/, and Pi into /mnt/ext1/applications/. Add edit-epub.app to the list of applications for EPUB files in /mnt/ext1/system/config/extensions.cfg, and then you can choose it from the "Open" menu to edit EPUB files. N.B. Windows users: see before downloading to ensure that the edit-epub.app script will work on the PocketBook reader.