I used Win32DISK (flashing back with Phoenix Card-v4.1 burning software) to write the decompressed BPI W2 Android image file install.img to the 8G SD card, then plugged it into the BPI W2 SD card slot, the SW4 switch dialed to a position, plugged in the power indicator light, pressed the POWER button did not respond, and the HDMI output port did not output. (my board used the SD card to start the Ubuntu system). Who knows what the reason is?
First of all, thank you for your reply ,but I have several questions to ask you.
My W2 used to install Ubuntu 18.04 with SD card. Now I’m going to modify Android OS. Should I burn BOOT first?
If, according to the method you said, the next boot after the completion of burning is not to plug in the U disk, directly to the W2 power, press the POW key directly into the system to start?
I look forward to your advice.
going through linked OpenWrt guide you will have correct u-boot in emmc.
files that guide shows after decompressing .img to USB flashdrive looks like recovery image + audio drivers + kernel uImage + initial root partition image.
That looks like instructing board to look for rootfs on emmc partition 1 (boot: normally uImage + bluecore.audio + .dtb only in there)
I assume it will boot having rescue.root.emmc.cpio.gz_pad.img as rootfs. Then it will do its thing preparing emmc partitioning and contents for actual, proper boot.
Waiting for OpenWRT burning,after finished,W2 will reboot and go into OpenWRT system.
next reboot - you have everything set right and you do not need USB drive to help you booting.
from now on updates look similar to how you flash android ROMs on your smartphone:
boot to recovery and select file to write to partitions device is using during boot process.
“tab” or “esc” (depending on guide) while turning w2 on looks like the way to initialise recovery instead of normal system boot.
it appears recovery is hardcoded to look for install.img on root of USB drive (no need to select update file manually - just stick it in)
let it process what is needed and possibly reboot back to new system
Thank you for your help.My W2 is now running on ubantu, using an SD card to boot, and I want it to be running on Android 7.01, SD card or EMMC boot.
Can you tell me the specific operation steps and what tools, drivers or software are used to complete the board boot (SPI should be burned before SD card or EMMC)?
中文翻译:
谢谢你的帮助,我的W2现在刷ubantu系统,使用SD卡启动,我想把它刷成安卓7.01的系统,SD卡或者EMMC启动都可以。
你能告诉我具体操作步骤,以及用什么工具、驱动或软件,来完成板子启动吗(应该需要先烧写SPI再烧写SD卡或EMMC)?
Thank you for your help. My BPI-W2 is running Android 7.1.1. But now there are a few questions that need to bother you:
The power-on system of W2 development board starts by itself. When it needs to be shut down, the power key is invalid and can only be pulled out. How can I use the power key to shut down the system?
How to set and enable the infrared function of W2 development board?
The PCIe2.0 slot of W2 development board installs RTL8822BE WIFI and Bluetooth integrated network card, but WIFI works normally, Bluetooth display has been disabled and can not be activated.
The LAN port of W2 development board does not work.
Can you tell me how to operate or set it up in detail? I look forward to your reply. Thank you very much.
Good day. Did you figure it out? I have the same problem please ?
I have an error after installation:
[ 5.043297] —[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Or blocked in:
[ 1.143655] reg = 0x330800
But what’s special, a year ago, when I used other BPI-W2 devices (V1.0), everything worked normally + Ethernet port OK. Last week I bought a new BPi-W2 and Android (6,7 all images tested) doesn’t work.
So either this BPI-W2 series is defective, or SinoVoip provides corrupted installation files ??