Ethos v1.5.7 and X18, X20 series User Manual
Rule 1: use only the following characters: A-Z, a-z, 0-9, ()!-_@#;[]+= and Space
Rule 2: the name must not contain more than 11 characters, plus 4 for the
extension. If the name is longer than 11 characters, it is displayed in the File
Manager but does not appear in the model image selection interface.
Image conversion tools
There are some useful image conversion tools available:
1. Windows based
https://github.com/Ceeb182/ConvertToETHOSBMPformat
(This utility also applies the file naming rules.)
2. Web based
https://ethosbmp.hobby4life.nl/
documents/
This folder is for documents.
documents/user/
This folder is for user text documents. They can be called up in the ‘Text’ widget.
Firmware/
This folder is for firmware files. Firmware updates for the Internal RF module, external
modules and other devices like receivers etc. are stored here. They can then be
flashed from here via the external S.Port on the radio, or OTA (Over The Air). The new
firmware must be copied to the Firmware folder after placing the radio in boot-loader
mode and connecting to a PC via USB.
Tap on the Firmware folder to view the firmware files that have been copied to this
folder. Then tap on the Flash option in the popup dialog. The example above shows the
internal RF module being updated.
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