Have you tried this?
If yes which kind of uart adapter have you used? There was a report of device does not recognize any input with ch340 adapter.
I use USB-UART (RS232 TTL) CH340G
Yes, then I saw OpenWRT welcome screen, but that’s all. Unless that’s all and nothing else should be installed, but I have expected to see OpenWRT printed in my debugger console?
BusyBox v1.36.1 (2024-03-22 22:09:42 UTC) built-in shell (ash)
_______ ________ __
| |.-----.-----.-----.| | | |.----.| |_
| - || _ | -__| || | | || _|| _|
|_______|| __|_____|__|__||________||__| |____|
|__| W I R E L E S S F R E E D O M
-----------------------------------------------------
OpenWrt 23.05.3, r23809-234f1a2efa
-----------------------------------------------------
=== WARNING! =====================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
--------------------------------------------------
I have changed OpenWRT version to 23.05.3, as someone told me version 23.05.5 doesn’t work on bpi-r3
If I disconnect and connect the WAN port in my bpi-r3 I can see such output in the console
[ 41.594591] IPv6: ADDRCONF(NETDEV_CHANGE): br-wan: link becomes ready
[ 64.701738] mt7530-mdio mdio-bus:1f wan: Link is Down
[ 64.706836] br-wan: port 2(wan) entered disabled state
[ 67.728224] mt7530-mdio mdio-bus:1f wan: Link is Up - 1Gbps/Full - flow control off
[ 67.735956] br-wan: port 2(wan) entered blocking state
[ 67.741115] br-wan: port 2(wan) entered forwarding state
yes TX is connected to RX and RX is connected to TX
yes it is set to 3.3V
Try it with a ft232rl module set at 3.3volt.
? And what exactly should not work okay, found it …
I used sysupgrade …
Do you have any idea how I can fix this Boot stuck on “IPv6: ADDRCONF(NETDEV_CHANGE): br-wan: link becomes ready” issue ?
Yes, that was the reason I changed, but it appears to be the same issue on both of these open-wrt versions. So I guess there is sth wrong with my bpii-r3 router or the way how i am writing an image on sd card or my boot process. I have no idea what can be wrong. This is my 1st OpenWRT router 
But how will this help? Isn’t it only to print output to my console and pass some commands? Everything seems to work. I can see outputs and I can pass commands like ls/ifconfig…
I just fly over the chat 
.
I also see your other chat … rebooting, rebooting:
→ The basic things are, that you have a working power supply!
→ That you have a working USB to UART Adapter!
→ I read very very often, that people had problems with your SD card … some people have reported that they have to delate the SD card befor writing the image on it. Others have bought a new card.
You said that you have buyed a new BPI-R3? I do NOT belief, that the R3 you own is permanently damaged by you 
.
On the “SPI NOR” 0 0 0 0 → there should be the Openwrt image of banana pi. Can you boot it successfully?
PS: I’m not good in reading logs. A guy with experience in it could may point you more exactly on the right path! But do not give up!!!
I have a new one, I bought 2 sd cards. If I boot from NOR, everything works, but I wanted to boot from eMMC.
You say I have destroyed my R3, and it is not going to work anymore? (Or I have misunderstood you). The only thing I was doing was repeating the same steps I have described in another topic I have opened.
I have only one BPI-R3, I bought a new SD Card as I thought after booting so many times I have destroyed my sd card and wanted to have a fresh one to be certain it works)
So, you get error messages by booting from SD card?
With what tools do you write the image on SD card?
First I move to NANAD and then check boot from SD CARD, but it stuck on this ipV6 br-wan → Then I change jumpers to boot from NAND and moving image to eMMC → Then I change jumper to boot from eMMC and run default boot command , but it stuck on this ipV6 br-wan
First I use this
gzip -d openwrt-23.05.5-mediatek-filogic-bananapi_bpi-r3-sdcard.img.gz
Then I write an image to sd card
sudo dd if=openwrt-23.05.5-mediatek-filogic-bananapi_bpi-r3-sdcard.img of=/dev/sdb
And then my sd card looks like that
Disk /dev/sdb: 29,76 GiB, 31954305024 bytes, 62410752 sectors
Disk model: SD/MMC
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 5452574F-2211-4433-5566-778899AABB00
Device Start End Sectors Size Type
/dev/sdb1 34 8191 8158 4M Linux filesystem
/dev/sdb2 8192 9215 1024 512K Linux filesystem
/dev/sdb3 9216 13311 4096 2M Linux filesystem
/dev/sdb4 13312 21503 8192 4M EFI System
/dev/sdb5 24576 90111 65536 32M EFI System
/dev/sdb6 90112 131071 40960 20M EFI System
/dev/sdb7 131072 344063 212992 104M unknown
okay, i think you useed that information:
https://openwrt.org/docs/guide-user/installation/installation_methods/sd_card
And did the boot from SD Card work?
yes exactly, I have used this tutorial. No, I also can not boot from sd-card itself, so I guess sth is wrong with my sd-card image I am writing to it. As ever time after I write an image to this sd card and check with fdisk I see this:
The backup GPT table is not on the end of the device.
but I was riding that it is normal, and I should not be worried about this
Did you ever use the Balena Etcher?:
I have a Windows PC and ever useed Balena Etcher!
I had never problems with SD card booting …
Yes I have also used this, but this gives the same issue (problem with GPT Table and stuck on this “IPv6: ADDRCONF(NETDEV_CHANGE): br-wan: link becomes ready”)
Are the SD cards have the same brand and from the same seller?
And there is nothing else conncted to the R3?
SD cards are the same brand: Qlive 32GB 80MB/S read 20MB/S write
What is connected to my R3:
- Power supply
- RJ45 to WAN port
- USB-UART (RS232 TTL) CH340G via USB to my laptop
Without spending money, I would disconnect RJ-45 and USB-UART (maybe that’s nonsense).
Boot from SD crad and look what happend? Normal boot? After that, connect USB-UART and try to see openwrt logo?
If that not helps:
→ “professional” delate SD card download Openwrt image again and write it on SD card … and so on …