[ARCHIVED] Downgrading firmware (advanced users)

[abilio]

THIS PROCEDURE IS NO LONGER WORKS! PLEASE SEE HERE FOR UP TO DATE INSTRUCTIONS:

https://docs.pycom.io/chapter/advance/downgrade.html

[rcolistete]

@seb Thanks, from v1.17.0.b1 all firmwares are available at :
https://github.com/pycom/pycom-micropython-sigfox/releases

[seb]

We will soon be uploading the firmware packages to: https://github.com/pycom/pycom-micropython-sigfox/releases

They are not there yet but will be soon

[semireg]

It'd be nice if https://software.pycom.io/downloads/ had directory listings... or better yet, create a page with all the firmwares along with release notes so we can see what has changed.

[aevraewrvaervea]

This post is deleted!

[Colateral]

Hello Abilio,

If we building from git, we are getting appimg.bin, lopy_868.bin, also in upper folders bootloader.bin. and partitions bin. There is also a script file in exp32\boards <board> folder

I noticed in your LoPy868 tar file lopy_868.bin bootloader.bin partitions.bin, script and ._script files.

I can not find "._script" file. How you are generating this file?

Thank you

[rcolistete]

It is worth noting that LoPy4 has different firmware file from v1.13.0.b1 onwards, the diference is simply a '4' after 'LoPy'.
Links for direct download :
https://software.pycom.io/downloads/LoPy4_868-1.13.0.b1.tar.gz
https://software.pycom.io/downloads/LoPy4_915-1.13.0.b1.tar.gz
https://software.pycom.io/downloads/LoPy4_868-1.14.0.b1.tar.gz
https://software.pycom.io/downloads/LoPy4_915-1.14.0.b1.tar.gz
https://software.pycom.io/downloads/LoPy4_868-1.15.0.b1.tar.gz
https://software.pycom.io/downloads/LoPy4_915-1.15.0.b1.tar.gz

[Xykon]

@pjoerke Please use python bin/updater.py -t LoPy_868-1.9.2.b2.tar.gz -p COM12 -s 921600 flash

[pjoerke]

Hi,

I want to downgrade my LoPy. Unfortunately I get an error when running

python bin/updater.py -t LoPy_868-1.9.2.b2.tar.gz -p COM12 -s 921600

I get the error: "updater.py: error: too few arguments"
What's going wrong?

Regards
Pascal

[yahia]

To download higher firmware versions that are not present in the above list; use the below link with the firmware version of choice:

https://software.pycom.io/downloads/LoPy_868-1.6.7.b1.tar.gz

I am adding this here to keep downgrading related information in one place for future reference.

[Colateral]

Updater Version 1.1.1 on LopY doesn't work anymore

d:\Pycom>"c:\Program Files (x86)\Pycom\Pymakr\Python27\python.exe" pyupgrade/bin/updater.py -t 1.5.0.b1-LoPy_868.tar.gz -p COM14 -s 115200 flash
Connecting...........................................
Exception: Failed to connect to ESP32: Timed out waiting for packet header, on line 157

[abilio]

@PCA, just upgraded the original list up to the last release :)

[PCA]

@abilio Where can we find 1.4.0 and 1.5.1.b1 releases ?
Thanks
Pascal

[toribios_people]

Works fine here as well, with Windows 10.

[Shaun]

@abilio
The latest updater on Windows 7 worked for me.
No more:
Exception: Error -3 while decompressing: invalid literal/length code, on line 124

[abilio]

@toribios_people, @sakis, @Knoahlr, @livius, the problem for (up/downgrading) versions 1.0.0.b1 and higher under Windows should be fixed now.

Can you please download the latest version of the tool, retry the procedure and post your feedbacks?

[sakis]

@toribios_people

That could be the case (usage of VM). Thanks all for the testing, it seems that this is a Windows-specific issue. I'll report it to our firmware updater expert.

[toribios_people]

@sakis I have tried with linux through VirtualBox and I don't get that error any more, althought the flashing process is not very stable. Took me 6 attempts to get the WiPy flashed, on the other 5 I got this error at ramdom completion percentages:

Writing at 0x0009400... (80%) Exception: Failed to write compressed data to flash after seq 33 (result was 0xc1, 0x0), on line 132

Maybe the problem is beacuse of flashing it through a virtual machine.

[livius]

i try downgrade my wipy to version 1.3.0.b1 but - on Windows 10 64 bit:

C:\Program Files (x86)\Pycom\Pycom Firmware Update\Python27\pyupgrade>"C:\Program Files (x86)\Pycom\Pycom Firmware Update\Python27\python" "bin\updater.py" -t WiPy.tar.gz -p COM3
Namespace(file=None, port='COM3', speed=115200, tar='WiPy.tar.gz')
Connecting...
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 115200
Changed.
Exception: Error -3 while decompressing: invalid stored block lengths, on line 131

[Knoahlr]

@sakis seem to be getting the same error code as @toribios_people
I`m also doing this from a windows machine.

Namespace(file=None, port='COM7', speed=115200, tar='1.1.0.b1-WiPy.tar.gz')
Connecting...
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 115200
Changed.
Exception: Error -3 while decompressing: invalid literal/length code, on line 124