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

[fixingmytoys]

@asper

Some ppls asked me for a pic from inside:

View attachment 112888

Its basicly an upgrade of the USB-Mod. If you already have performed this you just have to add 2 more wires and a switch. The first brown wire is GND, the second is sense. Wire those cables to a 3 Pole Switch. Take care that the GND is in the middle. With this method you can later add a LED, which lights up when youre in device mode. The power for the led can be taken off the original led board (red wire). You might have to create youre own Mini-USB to USB cable, dont know if this can be buyed.

View attachment 112894

Can I see a photo of the whole thing including the switch, from what I gather is going five volts to the switch then to USB right ?

 

[Hekel]

Can I see a photo of the whole thing including the switch, from what I gather is going five volts to the switch then to USB right ?

Wrong, 5v is going directly to the usb port. Sense and ground is going to the switch while sense is standing in the middle.

 

[fixingmytoys]

Wrong, 5v is going directly to the usb port. Sense and ground is going to the switch while sense is standing in the middle.

It the way it was written just confused me, so the switch is just to join the sense to ground to put it in to otg USB

 

[Hekel]

It the way it was written just confused me, so the switch is just to join the sense to ground to put it in to otg USB

Correctly. I added a additional led which lights up when you leave otg mode, for that you can use the last pin of the switch.

 

[Hekel]

Hmm strange i can reflash everything with no issue in the log file and still the system doesnt boot :-(..

Any help?

 

[WD_Gaster]

put your usb switch out of OTG mode. then disconect everything and reboot.
sounds to me like you are shorting the board and forcing your own unit into bootloader mode.

 

[Hekel]

put your usb switch out of OTG mode. then disconect everything and reboot.
sounds to me like you are shorting the board and forcing your own unit into bootloader mode.

Its not the unit with the switch, its the first one. There its only made a usb mod nothing else. I can try to remove 5v from the port but i dont think this is the problem.

 

[WD_Gaster]

Its not the unit with the switch, its the first one. There its only made a usb mod nothing else. I can try to remove 5v from the port but i dont think this is the problem.

if its not even looping at the android screen that means the boot.img can be shot. may i ask what was the last thing you were doing before it did this?

 

[Hekel]

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.

 

[WD_Gaster]

a different hardware revision perhaps? can you upload a picture of the board just out of curiosity?

 

[Hekel]

a different hardware revision perhaps? can you upload a picture of the board just out of curiosity?

Its the same i type i posted back earlyer when i performed the usb mod. Strangely i flashed it before with successes.. dunno why this happened :-( now. But i can redump all img and theyre identical with the flashed ones and i didnt changed anything on the dumps. I just cant get out of this mode

 

[asper]

Its the same i type i posted back earlyer when i performed the usb mod. Strangely i flashed it before with successes.. dunno why this happened :-( now. But i can redump all img and theyre identical with the flashed ones and i didnt changed anything on the dumps. I just cant get out of this mode

Are you sure the param file is the one with original partitions and not the resized one or viceversa?

 

[Hekel]

Are you sure the param file is the one with original partitions and not the resized one or viceversa?

Yes i used the dump i made myself. But the console doesnt give out any signal on the hdmi port. And as i sad its only be recognized as LOADER Device :-(

 

[asper]

Yes i used the dump i made myself. But the console doesnt give out any signal on the hdmi port. And as i sad its only be recognized as LOADER Device :-(

I think you wrongly flashed the uboot partition (not the boot one) or the wrong loader. Try to reflash ALL partitions with their correspondant parameter file and retry.

--------------------- MERGED ---------------------------

Loader mode starts automatically if it cannot find anything to load at start. Look at the boot process i wrote in the wiki.

 

[asper]

I give up with WiFi (for now). Waiting for something to arrive from china... it will take 1-2 month to arrive (if it will ever arrive...).

The problem seems to be in the kernel and only 2 cores seems to be correctly compiled (and already loaded) by the system.
The solution can be a kernel recompilation but it is too much work; if someone good wants to try feel free to share their recompiled .ko modules !

 

[Ckunak]

I give up with WiFi (for now). Waiting for something to arrive from china... it will take 1-2 month to arrive (if it will ever arrive...).

The problem seems to be in the kernel and only 2 cores seems to be correctly compiled (and already loaded) by the system.
The solution can be a kernel recompilation but it is too much work; if someone good wants to try feel free to share their recompiled .ko modules !

what wifi chipsets did you order?

 

[asper]

what wifi chipsets did you order?

I ordered an rk3036 board.

 

[Ulmez]

Hey @Hekel, what can you tell us about Retroshield's arrival to our little nifty machines? Any news? We're so excited about it!

 

[Excalibur007]

...what can you tell us about Retroshield's arrival...We're so excited about it!

Seconded!!!

 

[Jojse]

Seconded!!!

Third!!!