===== What? =====
Some notes on the SansaFuze+ .  Why buying such an old player?  Because there is full support from [[https://www.rockbox.org|rockbox]]! :)

As of February 2020, the Fuze+ is available from [[https://www.amazon.co.jp/gp/product/B0041G62RY/|Amazon Japan]], and amazon.com .

===== Why rockbox? =====
  * OpenSource pieces
  * support for many codecs, like ogg vorbis, Amiga mod and sid files
  * _really_ configurable: multiple bookmarks per file can be set, fading from one file into the next and much more
  * There are plugins for playing doom, quake, duke3d
  * [[https://download.rockbox.org/daily/manual/rockbox-sansafuzeplus/rockbox-buildch12.html#x14-34900012.4.15|A One-Time password client]]
  * emulation
    * gameboy/gameboy color emulator are buildin:place files with .gb or .gbc extension
    * NES emulation plugin exists
  * If you need something, you can create it!
===== Recovering from empty battery and not charging =====
When unpacking the Fuze+, the foam covers of the ear plugs immediately turned into dust. I think the device is really new, and has been in some warehouse for many years. The battery was apparently completely depleted. When connecting usb, the screen lighted up. I could mount the internal disk, run the Rockbox install program without errors - it copies files to the devices internal memory. Just, then disconnecting usb, and pressing on/off (the button at the top) did not work. 

The device is apparently not even able to charge, one has to supply firmware so it starts charging. The [[https://www.rockbox.org/wiki/STMP37xxRecovery|rockbox site]] has excellent details, on my Fedora31 system I got files sbloader_64 and sansa_fuzeplus_charge.sb . Then, as instructed, disconnect USB, press the plus-button, connect usb, release the plus button after some seconds.

<code>
# the device appears like this
[root@電脳 ~]# lsusb
[..]
Bus 001 Device 008: ID 066f:3780 SigmaTel, Inc. STMP3780/i.MX23 SystemOnChip in RecoveryMode
[..]
[root@電脳 ~]# 

# flashing first failed:
[root@電脳 rockbox]# ./sbloader_64 sansa_fuzeplus_charge.sb 
Device: 066f:3780 @ 1.8
libusb: error [submit_control_transfer] submiturb failed error -1 errno=16
Cannot probe transfer size, please specify it on command line.
[root@電脳 rockbox]# 

# using filesize
[root@電脳 rockbox]# ls -al sansa_fuzeplus_charge.sb 
-rw-rw-r--. 1 chris chris 688 Feb  6 12:07 sansa_fuzeplus_charge.sb
[root@電脳 rockbox]# 
[root@電脳 rockbox]# ./sbloader_64 -x 688 sansa_fuzeplus_charge.sb 
Device: 066f:3780 @ 1.8
Transfer size: 688
Error: cannot get status report
[root@電脳 rockbox]# ./sbloader_64 -x 688 sansa_fuzeplus_charge.sb 
Device: 066f:3780 @ 1.8
Transfer size: 688
transfer error at init step
Error: cannot get status report
[root@電脳 rockbox]# 
</code>

Despite the "Error: cannot get status report", the transfer was apparently successful. After 10 minutes I disconnected USB, and was able to start the device. Then connect USB and charge.