Installation / Removal > Other - Installation/Removal

Surfans F20 v3.4 - jztool doesn't seem to activate the screen

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jdharper:
I just tried the jztool again with the file you linked, just in case. Same result: as soon as I run the jztool command, the little blue light turns off, I get this message, and nothing happens after.

PS C:\Users\JD\Downloads> .\jztool.exe -v erosq load bootloader.erosq
[ NOTICE] Rockbox bootloader version: b4e7c60c6d-221029

Tried the same thing with the AIGO Eros Q hardware revision 3 bootloader from https://www.rockbox.org/wiki/JztoolInstall#jztool, and got the same result but with a different version number. The last digit is off by one from what's on the website but I'm assuming there's a typo on one or the other and that it's the right bootloader.

PS C:\Users\JD\Downloads> .\jztool.exe -v erosq load bootloader.erosq
[ NOTICE] Rockbox bootloader version: a7cfee640d-240909

dconrad:
Ok, yeah something's definitely different then. The fact that the blue light goes off makes me think perhaps they're using a different power controller than the AXP192...? I hope not, hopefully it's a simple change. We can't really do anything until we get an update file though.

dconrad:
The second set of numbers in the bootloader version is just the date, so that discrepancy is just Sept. 8 vs Sept. 9.

Well if you feel like messing with it, we can do a few tests:

 1) If you load up the bootloader with jztool (be sure to use the a7cfee640d-240909 version instead of the b4e7c60c6d-221029 version) and scroll 6 clicks to the right and then press play, the device should reboot into the original firmware. It's between "Shutdown" (5 clicks) and "Install or Update" (7 clicks). Fortunately, as long as you make sure the bootloader.erosq file is not on the card, there's no danger there. It would probably actually be easiest to do this test without the card in the device at all. This would confirm your suspicion that it's alive but the screen is just off.

 2) We should be able to dump the contents of the flash to the SD card. You would:

* load up the bootloader (use the a7cfee version)
* scroll about one whole revolution to the right (it's more important to never go left than it is to go precisely one revolution), then press play
* scroll about one whole revolution to the right
* scroll one click to the left and press play
* wait, let's say, 1 minute and 30 seconds
* reboot the player and hook it up to the computer to get the flash.img file
We could also do a few test builds where we try some different GPIO pins and see if we stumble on one that is changed.

jdharper:
Hmm. No luck there after several attempts. Maybe it isn't just the LCD after all? Or maybe I'm missing my targets, it's hard to tell.

I did get an email back from Surfan's support with a google drive link.... that doesn't work and says I need to be authorized. Once I get a working firmware link I'll report back!

jdharper:
They have gotten back to me with the 3.4 firmware.

Here's a link to it:

https://www.dropbox.com/scl/fi/pr3m32pnkcplr8o5mh26g/update.upt?rlkey=5szl2wnwy145n7y3e9jta87rl&st=c3thmu6s&dl=0

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