[ROM] "GENERIC" SC v2.0 USER/USERDEBUG - S905x2 / S905x3 - AndroidTV 9

[drsam007]

superceleron I was able to find out why serial console was not working. It was because of defective USB TTL converter. I bought another one, and now I can see the uboot/kernel logs. I've pasted it at:

https://pastebin.com/pEty6p32

I am not sure what is the issue, but I keep seeing lot of "binder" transaction errors. The CPU also starts getting very hot. Nothing happens on screen other than Android boot animation.

[drsam007]

Yes you do of course!

superceleron I bought USB-TTL cable and wired it up with Putty on windows. But on boot, I see only the following message, and nothing comes up after that:

SM1:BL:511f6b:81ca2f;FEAT:A0F83180:20282000;POC:F;RCY:0;EMMC:0;READ:0;0.0;CHK:0;
bl2_stage_init 0x01
bl2_stage_init 0x81
hw id:

I flashed back stock fw, and after that also the serial console shows only this message. The box itself is booting up fine with stock rom. This box does not have labeling for GND, TX, RX, but I assume that the one with square background is GND, and next one is TX and next RX. How to get Uboot logs now?

[chenzhuops2]

x96 max plus maybe use the fireware?s905x3
lddr3

[superceleron]

You are the greatest! Thanks alot for pointing this out and apologies for all this being a bit off topic. I wrote a bash script to split the boot image and extract the dtb after examining a few methods written in C, python & perl available on github. None of the scripts/code I encountered accounted for multiple device trees and I was only extracting the first one found. I modified my script to extract the correct DTB and hey presto! Script was written to avoid commands dependent on busybox.

Nice one, i bet someone will find it very useful... well by the amount of downloads already, it think it is lol

[5p0ng3b0b]

its a multi dtb, it means 4 DT's in 1 file, so dunno how you unpacked the roms and the dtb file.

You are the greatest! Thanks alot for pointing this out and apologies for all this being a bit off topic. I wrote a bash script to split the boot image and extract the dtb after examining a few methods written in C, python & perl available on github. None of the scripts/code I encountered accounted for multiple device trees and I was only extracting the first one found. I modified my script to extract the correct DTB and hey presto! Script was written to avoid commands dependent on busybox.

[superceleron]

X96 MAX+ 2/16GB s905x3

I'll lose lcd and reset button?
If yes how can I go back to stock rom (short pin on emmc)?

yes you will lose reset button and lcd.
And yes you can short the pin on emmc to flash it again, or if you flash the debug build just install terminal emulator and open it and connect the usb cable to the OTG port and type this commands on the Terminal Emulator(without the ""):
"su"
"reboot update"

And voila...

[majkool]

X96 MAX+ 2/16GB s905x3

I'll lose lcd and reset button?
If yes how can I go back to stock rom (short pin on emmc)?

[superceleron]

superceleron could you please tell me if I need usb-ttl cable to check serial console during boot?

Yes you do of course!

[drsam007]

Do I need usb-ttl cable for the same?

superceleron could you please tell me if I need usb-ttl cable to check serial console during boot?

[superceleron]

There is no tanix tx3 in there. Why..?

Mate google is your friend or forum search....

https://forum.freaktab.com/forum/advertisers-and-vendor-support-area/geekbuying-com/792917-tanix-tx3-amlogic-s905x3-8k-video-decode-android-9-0-tv-box-bluetooth-2-4g-5-8g-wifi-firmware-update-20191130

[superceleron]

Yeah it says g12a_u212_1g in in the DTB but my box is defo 4g/64g and uses it. DTB probably been tweaked from an older gen box.

cat /proc/device-tree/amlogic-dt-id

gives me

sm1_ac213_4g

its a multi dtb, it means 4 DT's in 1 file, so dunno how you unpacked the roms and the dtb file.

[Narcsoul]

http://www.tanix-box.com/downloads/

There is no tanix tx3 in there. Why..?

[5p0ng3b0b]

Many Thanx. Is there any official rom for tanix tx3 somewhere in case I brick it up? Can you a provide a link?

http://www.tanix-box.com/downloads/

[5p0ng3b0b]

well about the loop can't tell since i didn't try it..
The DDR4 is not in the DTB is in the uboot, the only way for you to know is grabbing a serial output as soon as you connect the box!
Also that dtb is from the 1gb ram.

Yeah it says g12a_u212_1g in in the DTB but my box is defo 4g/64g and uses it. DTB probably been tweaked from an older gen box.

cat /proc/device-tree/amlogic-dt-id

gives me

sm1_ac213_4g

[Narcsoul]

You misunderstood, that is why i have "Generic" notice the "", it may or may not work on your box.
I made it to be as "universal" as possible, but all depends how far away your box maker gone from the amlogic reference design.

Many Thanx. Is there any official rom for tanix tx3 somewhere in case I brick it up? Can you a provide a link?