atvXperience : The Forum

Ramon wrote: ↑Mon Apr 05, 2021 8:55 am Hello, I have the Mecool K2 Pro blocked or broken, when I upload the original firmware by usb burning tool it fails in 9% of the download. That is why I would like to try a different firmware to have if I recover it.

Please show photos of the RAM memory

[mention]Ramon[/mention]
KII eMMC is key protected. I will send you a script that removes the key protection and resets eMMC to the zero state, you can then install my new ATV9 ROM, I will also post the update link here..

Is the bcm4335 WiFi chip, or ap6335? I can hardly see it in the photo

Thanks, can you see it in these photos?

Ramon wrote: ↑Mon Apr 12, 2021 9:38 am Thanks, can you see it in these photos?

Write down markings from that chip or make better photo, where they can be read.

Model AW-CM256SM

Ramon wrote: ↑Mon Apr 12, 2021 2:26 pmModel AW-CM256SM

AW-CM256SM=BCM43455
BCM43455=AP6225

Board-Info:
- KII PRO 2G 16G DDR3 LQ
- DRAM = Samsung LPDDR3, clk. Rate ~800Mhz, 1x2G
- eMMC = FORESEE/SAMSUNG 16G
- WiFi = BCM4335, BCM43455
- DVB-Tuner = AVL6862 (is temporarily not supported in this build)

Download:
KII_Pro_lpddr3_2g_4335_6255_Pie.tar.xz
aml_autoscript

Instruction:
1. Copy aml_autoscript to the FAT32 partition of your SDcard
2. Insert the SDcard into the card reader of the KII-Box
3. Hold down the RESET button and switch on the KII-Box. Release the RESET button as soon as the first boot logo appears and unplug the KII-Box from the power supply
4. Burn aml_upgrade_package.img to the SDcard using Burn Card Maker
5. Now start the SDcard update - in this case you do not have to press the RESET button, the update starts automatically because the eMMC memory has been zeroed and BL1 searches for BL2 directly on the SDcard

A UBT update is of course also possible

Thank you very much for your help. It does not detect anything through the micro SD or usb, the boot logo does not appear on the screen, I have tried it in several ways. The burning tool with the PC if it detects it but does not load any firmware. In the next days I will keep trying. Thanks.

Ramon wrote: ↑Fri Apr 09, 2021 2:20 pm It does not detect anything through the micro SD or usb, the boot logo does not appear on the screen, I have tried it in several ways. The burning tool with the PC if it detects it but does not load any firmware.

I have the same test device, the build is 100% compatible. Try shorting eMMC pins 29-30

Apparently you deleted the original u-boot and created a boot loop