Which modules have I got to load for the debuguart?
I ask before I buy because I need to see if these are available for my O/S, or see if it is possible to compile these.
HOLD ON!!!
You wrote this earlier in this thread.
Why cannot I not do this now? What has changed?
Why did you think this could work earlier?
ā¦ only to write later in your posts that OpenWrt cannot be installed onto Banana Pi via the SD->nand without buying a uart?
I fear that there is a lot of presumption and miscommunication taking place.
Maybe there is a way,but the way i know is over uboot-menu where i guessed it can be modified with openwrt fw_setenv command you tried. Basicly an debug-uart cable/adapter is always recommended,at least to see whats going onā¦waiting for ssh or luci can be forever if anything is wrongly configured and then debuguart is the only way to really see whats wrongā¦of course you can put sdcard in host pc and change configs.
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OK.Understood. Let me try this again:
Now that I have got a working NAND bootable BPI running, could I try to boot from OpenWrt SD again and run the command you meantioned earlier that did not work? Is it safe?
- Boot mainline Openwrt from SD card
- Ssh in.
- Run commands: fw_setenv bootcmd āenv default bootcmd ; saveenv ; run ubi_init ; bootmenu 6
Is the bootmenu 6 correct for BPI R4?
This should point to this:
- ok.
452 +bootmenu_6=\e[31mInstall bootloader, recovery and production to NAND.\e[0m=if nand info ; then run ubi_init ; else echo āNAND not detectedā ; fi ; run bootmenu_confirm_return
So, will this work:
- Boot mainline Openwrt from SD card
- Ssh in.
- Run commands: fw_setenv bootcmd āenv default bootcmd ; saveenv ; run ubi_init ; bootmenu 6
I read this person had questions about installing OpenWrt onto BP 4, and noted a different boot menu of 0.
fw_setenv bootcmd āenv default bootcmd ; saveenv ; run ubi_init ; bootmenu 0ā
What will break if I were to use the wrong bootmenu number? Could it brick?
You always have sdcard, but nand schould be written and if is incomplete (but i do not think so) it could possibly break boot from nandā¦but you do not see it and i do not know how you want to get furtherā¦if on nand is also possible to trigger the emmc install
Thanks!
Then could this be a good course of action?
- Trigger install to eMMC whilst booted from BPR4 O/S on NAND.
- Test it worked
- Trigger install to NAND from OpenWrt booted from SD card.
- Teat it worked.
- If failed then boot BPR4 O/S from eMMC if nessecary.
I cannot tell you save,but install mainline openwrt on emmc with bpi-wrt on nand does not work. You have to start from sd over nand to emmc.
Well I donāt want to do that anyway 
Can I install BPI-WRT from NAND onto eMMC? If this does work, does it matter if I wipe the NAND install?
It should be possible,but do you want to install that old system when a new is available?
Ah, I think you misunderstand what Iām trying to do.
Instead of installing openWRT from SD onto NAND that might fail and brick the device because I cannot get a uart-debug, I can install BPIWRT from NAND into EMMC then I have a backup that I can boot from in case everything goes tits up when I try to install openWRT from SD into NAND afterwards.
Why not? For a few euroās you can get one, from basically anywhereā¦
Not around here. I have never seen an electroicd shop or a real computer shop where I live. The closest to tech., we have got is MediaMarktā¦
I do not know which drivers I need to use the uart-debug. It might not be supported by Macos 12. I am still searching.
2 second lookup on google:
So you can use a ft232rl. You can order it from aliexpress āchoiceā and have it in a few days.
I could find uart-debug onlinr but the price was between ā¬12 and ā¬24 plus delivery for several brands. I admit that I had not looked on AliExpress.
aliexpress is not a few days.
It took just over a fortnight to get the bananapi delivered to me.
I have got a dispute open with sinovoip which closes in 8 days time. I can still return the box if needed. If it will not install openwrt onto nand, then I can return it. However, the uart-d will take longer to get here.
Fitlter on āchoiceā and you can get one in northwest europe within 5 days. They have it in warehouse inside europe allready.
https://a.aliexpress.com/_EQ23s06
For exanple, vut then do not forget dupond cables
and you can get one in northwest europe within 5 days.
I ordered what you put in the link. Expected deliverly is May 8th to May 9th. So, 10 days.
For me it was 3 to 8 may, you can look furter. Do you have dopund cables?