Rockbox Technical Forums

Installation / Removal => Manual Installation => Sandisk - Installation/Removal => Topic started by: tofmin on March 19, 2016, 02:38:37 PM

Title: [c240v2] Original firmware and microSD.
Post by: tofmin on March 19, 2016, 02:38:37 PM

Hi.

Few years ago, I asked same question. My Sansa c240 v2 does not work with OF and microSD card when RB is installed.

I mean, is that the original software will not turn on if the SD card is inserted. Stuck on the "Sandisk" logo.
If I take out the card, original firmware starts without a problem.

Six years have passed, hundreds of updates, and the problem is still not resolved :-(

Any ideas?

Title: Re: [c240v2] Original firmware and microSD.
Post by: saratoga on March 19, 2016, 04:16:55 PM

You will have to talk to Sandisk. Their firmware is closed source and we can't modify it.

Title: Re: [c240v2] Original firmware and microSD.
Post by: tofmin on March 19, 2016, 05:41:23 PM

But... when i uninstall modified bootloader and RB, then original firmware works like a charm with SD card...

;-(

Title: Re: [c240v2] Original firmware and microSD.
Post by: saratoga on March 19, 2016, 06:30:37 PM

That's probably just a coincidence. Having the bootloader installed has no effect on the Sandisk firmware.

Title: Re: [c240v2] Original firmware and microSD.
Post by: tofmin on March 19, 2016, 07:09:47 PM

I don't think so...

Reinstalled bootloader and RB many times  (more than 30, i think). Tested stable, dev version, dozen SD cards, no matter. OF does not boot with SD card inserted when RB (bootloader) is installed.

Title: Re: [c240v2] Original firmware and microSD.
Post by: saratoga on March 19, 2016, 08:03:45 PM

I don't see how that is possible given how the bootloader works, but very few people have c200v2 players so it's at least conceivable that there is a problem no one noticed.

Title: Re: [c240v2] Original firmware and microSD.
Post by: Mihail Zenkov on March 20, 2016, 02:31:09 AM

Quote from: tofmin on March 19, 2016, 07:09:47 PM

I don't think so...

Reinstalled bootloader and RB many times  (more than 30, i think). Tested stable, dev version, dozen SD cards, no matter. OF does not boot with SD card inserted when RB (bootloader) is installed.

Is OF have same version before and after RB installed? 

Title: Re: [c240v2] Original firmware and microSD.
Post by: tofmin on April 16, 2016, 06:37:21 PM

Quote from: Mihail Zenkov on March 20, 2016, 02:31:09 AM

Is OF have same version before and after RB installed?

Yes. 03.02.05A.

Title: Re: [c240v2] Original firmware and microSD.
Post by: pamaury on April 17, 2016, 09:29:04 AM

Hi,
after a discussion with Mihail, it seems plausible that the dualboot code (in rbutil/mkasmboot/dualboot/dualboot.S) changes the hardware configuration which makes the OF fails. More investigation is needed but at least that's a very small piece of code so it should be possible to find the problem.

Title: Re: [c240v2] Original firmware and microSD.
Post by: Mihail Zenkov on April 18, 2016, 04:07:40 PM

G#1293 don't work. I try to search for another way.