Sega Megadrive (Genesis) Flashback Mini HD with an USB on internal mother board

MicroNut99

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I just reflashed to asper cfw. Everything worked well and the message OK was written in the tool. Then i rebootet my console since then im stuck.

Hekel,
I know this is an old post however I'm very curious because I know a bit about the RockChip and it does not sound like all 15 partitions have been restored to this device.

RockChips are very hard to break.
There is nothing wrong or dangerous with using Lower Format and re-flashing ALL of those partitions proper.
If the devices is restarted after a Lower Level format is performed it will still boot into the Loader.

As long as the Loader is there, the NAND will recover the Data in those pre-defined Partitions that have been backed up in advance.
No reason to use MASK Device to replace the Loader because at that point the entire ROM image must be replaced and while that is possible it cannot be done with the specific RK3036 loader that was used build the original ROM image at the factory. The physical NAND can break down or be damaged and the software Loader corrupted and or lost but that is extreme.

I'm serious when I say if you include ALL 15 you'll have a very good chance at recovering any RockChip Device.
No Video and Loader Device Only. Fixed.

Not only that the method will absolutely convert an OBB device to a non-OBB device if you use the repo on mdfbrew.
The reverse can be done just as easily with a complete copy of OBB device images.


I have done this several times and if the NAND was going to fail it would in different ways.
If the Loader Device Loader is there and you have all 15 partitions then your chance of recovery is very high.
Follow the directions on mdfbrew and add the last 3 partitions line by line by right clicking.

Add all Partition lines to the AndroidTool and Flash the Uboot.img last.
0x00006000 baseparamer Output\baseparamer.img
0x00006800 resource Output\resource.img
0x00002000 uboot Output\uboot.img

No Video and Stuck in Loader Device mode. Fixed.
To be clear I could not restore the console fully using the method as described on mdfbrew but I plan to gracefully update it as wiki's allow.

I also learned that the NAND can be put into MASKLOADER mode by shorting pins 7,8 and 9 and then applying power to the console.
This will allow a new loader+bin for a newly signed ROM but that is way down the road.

The NAND changes the way it is mounted in Windows between the two img sets.
MTP Device for Non-OBB and RK2039 NAND for OBB devices.

If you want to know how to use ADT v2.39 without using 2 different consoles please let me know.

Again immediately after flashing UBoot.img the console will immediately start ADB Mode.
See an image of the fully loaded ADT recovery console.
Remove the spaces to view the image.
https://image.ibb.co/cmBzzz/recovery.png
 
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MicroNut99

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I have been lurking for long time and have been inspired by Everyone.
WD_Gaster's Generations Media Player got me really interested in something else... an MP3 Player! :)

Here is my "dev-switch mod" and Audio Extractor. (Instructable incoming)

The dev-usb mod uses a DPDT on-on / on-off slide switch.
The part is a Philmore electronics no. 30-9164 and looks like this.
It effectively turns Sense and Positive Data on/off.
Ground Data is shared between states.
Power to OTG is separate and is provided by the Power Switch.
In this configuration there is no chance of short or data loss.
The Switch, if it were here labeled here, would be "Game and ADB."

The Audio extractor is powered over the HDMI cable.
As a bonus the Audio extractor will power the Genesis, however its not wired for power here...
I'm just not ready to drill, carve another hole and mount a USB power adapter just yet.

Can I please haz MP3 Player now :)

0920182158_resized_sm.jpg 0915181810b_resized_sm.jpg 0920182158c_resized.jpg 0923181627_resized_sm.jpg
0923181612b_resized.png

dEqbmp
 
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WD_GASTER2

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that is impressive. talk about turning a toy into something with badass audio options.
as for further mods. I would like my next efforts to be focused on the 2018 version when it comes out.
it apparently runs on retroarch. if its ram has been bumped to 512mb (one can dream) would be incredible for homebrew.
as for the mp3 player i had it shelved since people didnt seem to care. ill try digging it up and see if i can find it for you. its nothing too impressive though.
 
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mattytrog

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RK3036 eh? I had a PIPO tablet running one of those in 2012.

Just need to dig out rktool now
 

MicroNut99

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Firmware fun....
I knew there had to be an ATGames test screen in there somewhere.
Have not been able to find the correct key combo again but there is one.

1002180258_HDR_resized3.jpg


1002180300a_resized2.jpg
 

asper

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...except Sega have apparently taken the project in-house, as they were (rightly) concerned about what a poor job AT-Games had done with the previous devices.
Hi man, thanks for the info; can you post the original news stating that please ?
 

duwen

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Hi man, thanks for the info; can you post the original news stating that please ?
I can't find a definitive source, but there were a number of youtuber's running with the story a week or so ago... here's one from ReRez (Spawn Wave and ReviewTechUSA also featured the story);
 

MicroNut99

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This person has the Legends Flashback and this is an un-boxing and review.
Too bad the guy does not go into much detail about the sdcard slot.
Atgames Legends Flashback Review 50 Arcade & Console Games
 

WD_GASTER2

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@MicroNut99

have fun.

i dug up the mediaplayer source. I compiled it into an apk for you.

make a folder named mp3 on the sd card parition. ;)

havent tested the code in ages but should work with no issues.

https://1fichier.com/?cncgrent9wlvzm15pk8z

if anybody is interested. I am porting the launcher and the media player to the super retrocade.
 
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fixingmytoys

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MicroNut99

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