new H801 unflashable ?

[Zixim]

Make sure these boxes are checked before submitting your issue - Thank you!

• [H801] What hardware you are using
• [n/a ] Provide the output of command status 0

Have been testing an 2 H801 devices for a few weeks with Tasmota + mqtt + Home Assistant. All has been going well, so i decided to get a few more H801's. Just received a batch of 3 H801 devices and I tried flashing Tasmota on them, without any success. After reboot, this is what serial console shows:

 ets Jan  8 2013,rst cause:2, boot mode:(3,5)

load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v401052cc
~ld

I have always been flashing with esptool, never had any issue so far. Flashing a backup of the original firmware, yields the same result. I tried on 2 of the 3 received H801...definately holding off on experimenting on the 3rd one. Any suggestions ?

[thecomalley]

Ah that's better thanks. Now getting the following, is this where i need to blindly type module 20? have tried this and multiple reboots, flashed using esptool and 5.14.0

 ets Jan  8 2013,rst cause:2, boot mode:(3,7)

load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v401052cc
~ld

[Zixim]

sorry for the late reply... yes, it is the moment when you would issue the command, BUT don't use the venerable Putty... I've never gotten it to work for sending commands to the ESP device. Use Termite instead : https://www.compuphase.com/software_termite.htm

[orsgah]

Same problem after istall 6.1.1, after than i cannot istall any version, module boot loop with error:

ets Jan  8 2013,rst cause:2, boot mode:(3,7)

load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d
v401052cc
~ld

[Zixim]

@orsgah : The wiki explains a work-around, as does this thread.

[ozett]

i have problems to get the h801 into flash-mode. means it will not flash. i power it from 3.3 volts.

can anybody confirm that this is difficult from 3.3v and it must better be powered by normal power-in?

like the magichome-controllr? https://github.com/arendst/Sonoff-Tasmota/wiki/MagicHome-LED-strip-controller

[ozett]

i thought i did bad soldering and inspected my own work, but i found bad soldering on the board. it is so tiny, i did not manage to get rid of it. maybe the esp8266ex is already dead? i think, i go now with the magichomecontroller... 🙈

[egeu5]

@orsgah : The wiki explains a work-around, as does this thread.

@Zixim Hi, could you explain the workaround? In the wiki is only the command "module 20" to change the tx-pin from 0 to 1. This did not solve the boot-loop problem. I tried to flash minimal but this is not working and ends in a boot-loop. My flash size is 1MB - that should be enough for normal firmware but even minimal is not working.

[Zixim]

@egeu5 The solution for this bootloop is explained in gruesome detail over this thread.

If it doesn't work for you, you've got another kind of problem, or you're not doing the module 20 command properly. Either way, without more info from your part, no way to help more.

[CzarofAK]

@Zixim, somehow i am too stupid. where shall i enter the "module 20"? Using "esptool" on Windows 10, and getting this failure: C:>esptool -cp COM4 -cb 115200 -bm dout -cf tasmota-DE.bin -v esptool v0.4.13 - (c) 2014 Ch. Klippel ck@atelier-klippel.de setting flash mode from qio to dout opening bootloader resetting board trying to connect trying to connect trying to connect resetting board trying to connect trying to connect trying to connect resetting board trying to connect trying to connect trying to connect warning: espcomm_sync failed error: espcomm_open failed error: espcomm_upload_mem failed

C:>module 20 Der Befehl "module" ist entweder falsch geschrieben oder konnte nicht gefunden werden.

[barbudor]

@CzarofAK

• You esptool version is way to old : upgrade
• The command line is not the one recommended in Tasmota docs : https://tasmota.github.io/docs/Getting-Started/#upload-firmware
• Have you set J3 as instructed in the docs : https://tasmota.github.io/docs/devices/H801/#serial-connection
• Module 20 is a Tasmota command to be entered in the Web Console ONCE Tasmota has been flashed and is running

Read the Tasmota doc : https://tasmota.github.io/docs/devices/H801 or https://templates.blakadder.com/h801.html

And forget about esptool, just use the web flasher, it way more easy : https://tasmota.github.io/install

[CzarofAK]

@barbudor thanks for your quick response. i was able to flash it, one of my dupont wire was defect. sorry for my inconvenience.

[klrock]

As noted by ozett I also found bridged connections on the esp chip. Tried a repair but too small and too little skill. Had it for a couple of years, so no hope for replacement. My lighting project now on hold for who knows how long.