lolita wrote (View Post): › These are all the Actions ACU7515 official firmwares, complete with source code and everything. I have no idea how to assemble/build them and flash to the device though. Code: › s75_release_v9.1.51nodrm_070215.rar s75_release_v9.1.51drm_070215.rar ACU7515_9_1_51_NODRM_20070329.rar ACU7515_9_1_51_DRM_20070329.rar ACU7515_p10_9_1_52_NODRM_20070518.rar ACU7515_P10_9_1_52_DRM_20070601.rar ACU7515_P10_9_1_52_nodrm_E版IC录音补丁_0816.rar ACU7515_P10_9_1_52_nodrm_2ce_patch_0724.rar ACU7515_P10_9_1_53_nodrm_20070820.rar They're ~12M each so I'll only download them by request (from Actions server). Quote: › the mp4 becomes flash disk and only flashing white screen and stop. If you can get the part # of the display I may be able to find the correct driver for it. If U disk mode functioning, that means the firmware compatible with the CPU but display driver is wrong.

Hi Lolita

That sounds great. Obviously difficult to know which one if any will work for my player but probably it will be one of the 9.1.51 versions. Do you have to register as a user on this website? Or is there just a download link? Please let us know how we can try these - if you can upload them thats great, if not I'm sure I or someone else on this forum will gladly take your instructions and do it. I do believe these will be very helpful to lots of people!
Best Regards
Scatwell

ismaelpc wrote (View Post): › display unit was (as written at the side of LCD) DLK-005070416

That's the date of the LCD... 2007-04-16

Quote: › Don't tell me you're on dial-up.

I'm not, but the server transfers at ~3.6KB/s

Quote: › Do you have to register as a user on this website? Or is there just a download link?

No, and no.


ACU7515_9_1_51_NODRM_20070329.rar
ACU7515_9_1_51_DRM_20070329.rar

OK. Downloading them now.

Actions Semi wrote: › Your firmware requested completes. Please have discovered the downloading indication: http://rapidshare.com/files/53079380/ACU7515_9_1_51_NODRM_20070329.rar.html http://rapidshare.com/files/53080102/ACU7515_9_1_51_DRM_20070329.rar.html

lolita wrote: › Actions Semi wrote: › Your firmware requested completes. Please have discovered the downloading indication: http://rapidshare.com/files/53079380/ACU7515_9_1_51_NODRM_20070329.rar.html http://rapidshare.com/files/53080102/ACU7515_9_1_51_DRM_20070329.rar.html

lolita wrote (View Post): › Actions Semi wrote: › Your firmware requested completes. Please have discovered the downloading indication: http://rapidshare.com/files/53079380/ACU7515_9_1_51_NODRM_20070329.rar.html http://rapidshare.com/files/53080102/ACU7515_9_1_51_DRM_20070329.rar.html

I reckon these packages will be very useful in the hands of someone who understands the technical issues better than me, so if there any technical programming wizrds out there reading this, then grab these files (see Lolita's last post). I did however manage to compile 2 firmware files (.fw) from the tools included but neither of those worked with my player (in fact they both put it into adfu mode). So I'm a bit nervous about uploading these because of this. If anybody does want to have a go, then let me know & I'll upload them somewhere.
In the wider perspective though, there is a huge amount of source code etc in these so I'm sure they could help unravel some of the mysteries. I appreciate Lolita they took a long time to download, but I do reckon if you can also download the other ones too then this would be for the greater good.
I'm still searching for my elusive firmware but I think Lolita has identified a very useful source of information & software/firmware. Well done
Best regards
Scatwell

Hi!

Lolita, i am a programmer. If you snap me enough sources I think I can fix bugs in them and even try to make an universal operating system. All I need is 9.1.51, ACT2093_S75 for 2" screen firmware source for my player so I can test it out. I searched the firmware sources for long time now and if you help me I think I can help all of us.

Please tell me if you can upload the fw's somewhere .

Thank you again for your efforts!

I recommend you download the files provided above to see if you really understand the source code before requesting more firmware.

"i am a programmer" -- may be, but you need to knows the embedded system method, Z80 assemble languages and C, also the hardware architecture.

hi lolita,

i tried going to the rapidsahre link but traffic was heavy, is't possible if this can be downloaded in megaupload instead, sorry for the inconvenience.

'i am a programmer too" if this is the hope to resolve my problem in my mp4.

thanks a lot.

lolita,

no need, im downloading it right now, hope this will shed a lot of light with my mp4.

i'll check what can i do.

thanks for your help lolita, im still trying to contact smarkies but no luck, we have the same mp4.

regards.

Lolita,

Your one of a kind, you've given me a tremendoous complete information regarding my mp4 chip ACU7515.

I'll try my best, it's very good, very complete

wish me luck

thanks again. keep u inform incase just incase i complied this application

Lolita,

I manage to compile and create firmware but when i'm flashing it to my mp4 using MP3 Utilities v 3.68 it gives me an error 'invalid firmware upgrade"

i'm still trying to figure out what else missing from the created firmware.

Hi! Well you are definately right. I do not use C in my daily work, I am a PureBasic programmer, however the languages are not so different. I have 4 years experience so far and I even developed security software. But nothing about embedded systems and no Z80 unfortunately. I understand some of the code but not all. I think you're right about this, there is no need to have too much sourcecode if we are stuck with it. Anyway you are a pioneer and I'm sure the guys at s1mp3.org that created the SWAN API could use this code. Let me ask you something: Can I give the sourcecode to those programmers there or I am not allowed?

Oh, and wouldn't it be possible to create a library to use in the operating system that would require the LCD and the chipset to identify and simply load the required drivers and then the operating system files? Exactly like Windows XP does. There are literally thousands of graphic cards, network cards, motherboards, but Windows can handle them all with different drivers in a pack.

Thank you for your time!

If people prefer megaupload I have uploaded the firmware files I managed to compile (but sadly neither worked with my player)

http://www.megaupload.com/?d=HK6I00Z8 is the Actions 7515 9.1.51 (NODRM) firmware

http://www.megaupload.com/?d=L1H2MWRE is the Actions 7515 9.1.51 (DRM) firmware

Lolita's comprehensive information files are at:

http://www.megaupload.com/?d=LL4AP97L is the source code, firmware components, tools, hardware diagrams etc for the Actions 7515 9.1.51 (NODRM)

http://www.megaupload.com/?d=0P68FUMC is the source code, firmware components, tools, hardware diagrams etc for the Actions 7515 9.1.51 (DRM)

Good luck. I reckon we need some good embedded realtime programmers on the case!

PS sorry I made mistake & listed this as for Actions 7515_S75 when I now actually this it is for straight Actions 7515 chip...

Yup,

We need some people to create the base, the low level part (drivers, the kernel API) and then we can create the graphical interface and the main programs on them. I am getting in touch with some friends that fiddled with some of these things and i hope they can help us. I'll keep you informed.

Quote: › Can I give the sourcecode to those programmers there or I am not allowed?

It is (c) Actions Semiconductor Co, Ltd. and available to authorise distributor of Acions.

Quote: › Oh, and wouldn't it be possible to create a library to use in the operating system that would require the LCD and the chipset to identify and simply load the required drivers and then the operating system files? Exactly like Windows XP does. There are literally thousands of graphic cards, network cards, motherboards, but Windows can handle them all with different drivers in a pack.

This is a 24MHz 8-bit CPU with 8Kb of RAM and several MB of space for firmware only. It is not a PC.

Yes, I only said that with proper software identification this whole thing would be possible. However I do not have the knowledge to modify it yet.