I followed these instructions, but it only boots to stock firmwareThe easiest and safest method is this:
For first time installation follow this steps:
1) Download bootloader (update-to-rockbox-xxx.zip) and rockbox system’s archives (rockbox-full-xxx.zip);
2) Rename update-to-rockbox-xxx.zip to update.zip and write to the root of the micro SD-card without unpacking.
3) Unpack rockbox-full-xxx.zip to the root of the micro SD-card. System folder .rockbox must be placed at the root of this memory card. Card must be formatted to FAT16 or FAT32. Filesystems ExFAT, NTFS, EXT3/4 does not supported!
4) Install this SD- card to the X3 slot number 1;
5) Be sured that your X3 is totally charged. Normally update your player. To do this, in the menu "Setting" select "Upgrade";
6) The process of flashing must to begin. After successful installation Rockbox will start automatically
Rockboxing is independent of which version of the factory firmware you have installed.
Since this is a dual boot set up, you can simply use the slide lock switch to revert to xDuoo O/I and update the factory firmware.
It gave me message that it succeeded, but boots to stock regardless of what position lock button is in.
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