03397
Posts: 3
Joined: Sat Jan 28, 2017 6:02 pm

Downgrade Firmware

Wed May 27, 2020 5:24 pm

Guys I have the following Raspberry and I have used rpi-update to upgrade the firmware, but now I want to revert and to the latest stable version
How can I do that?

Linux raspberrypi4 5.4.42-v7l+ #1319 SMP Wed May 20 14:12:03 BST 2020 armv7l GNU/Linux

Hardware : BCM2711
Revision : c03111
Serial : 10000000dbd514e8
Model : Raspberry Pi 4 Model B Rev 1.1

RonR
Posts: 2867
Joined: Tue Apr 12, 2016 10:29 pm
Location: US

Re: Downgrade Firmware

Wed May 27, 2020 7:50 pm

03397 wrote:
Wed May 27, 2020 5:24 pm
I want to revert and to the latest stable version
How can I do that?

I'm not aware of any instabilities in 5.4.42, but you can go back to 4.19.97 with:

Code: Select all

rpi-update 993f47507f287f5da56495f718c2d0cd05ccbc19

Hash values for all commits can be found at: https://github.com/Hexxeh/rpi-firmware/commits

03397
Posts: 3
Joined: Sat Jan 28, 2017 6:02 pm

Re: Downgrade Firmware

Thu May 28, 2020 8:58 am

RonR wrote:
Wed May 27, 2020 7:50 pm
03397 wrote:
Wed May 27, 2020 5:24 pm
I want to revert and to the latest stable version
How can I do that?

I'm not aware of any instabilities in 5.4.42, but you can go back to 4.19.97 with:

Code: Select all

rpi-update 993f47507f287f5da56495f718c2d0cd05ccbc19

Hash values for all commits can be found at: https://github.com/Hexxeh/rpi-firmware/commits
Thanks for your reply
I have used these sudo apt-get update; sudo apt-get install --reinstall raspberrypi-bootloader raspberrypi-kernel
Now I am back to Linux raspberrypi4 4.19.97-v7l+ #1294 SMP Thu Jan 30 13:21:14 GMT 2020 armv7l GNU/Linux.

The reason I wanted to downgrade is that my Aeotec USB stick which is connected to one of the USB ports using a hub due to its known problem, after the upgrade starter giving me timeouts. I could not troubleshoot it is since no errors in the logs about the USB ports or what so ever and the only think that has changed was the firmware.

The command rpi-update with the has it just flashes to a certain version right and only the firmware? How about the bootloader?

RonR
Posts: 2867
Joined: Tue Apr 12, 2016 10:29 pm
Location: US

Re: Downgrade Firmware

Thu May 28, 2020 9:04 am

03397 wrote:
Thu May 28, 2020 8:58 am
The command rpi-update with the has it just flashes to a certain version right and only the firmware? How about the bootloader?

rpi-update does not change the bootloader nor USB (vl805).

ghstudio
Posts: 2
Joined: Wed Sep 04, 2019 12:48 pm

Re: Downgrade Firmware

Thu Jul 16, 2020 1:59 pm

I have the same problem with the z-wave switch. I tried
```
rpi-update 993f47507f287f5da56495f718c2d0cd05ccbc19
```
and that didn't help....the zwave is still not working. Do I need to change the bootloader as well...or is there a different procedure to downgrade the firmware.

business_kid
Posts: 33
Joined: Fri Dec 21, 2012 9:33 am

Re: Downgrade Firmware

Thu Jul 16, 2020 3:42 pm

I have also downgraded my firmware. I updated it yesterday, but it introduced a video problem. All the original files were saved by rpi-update, but there's no -revert switch or the like :(. As the files are taking up space on my sdcard, why can't I reinstall them?

My RazPi 4-4G came up fine. I loaded Netflix and started watching something. Fine so far. But when I went to maximise the video, the horizontal frequency went funny, and the picture turned into loads of nearly horizontal lines. I could click vaguely in the bottom right and maybe get the picture back.

If anyone is old enough to remember early tvs in the days of 405/625 line switches, there was an adjustment for horizontal frequency. When you had that wrong, the picture would lie over in lines. The wronger you had it, the more lines there were. As you got nearer the correct frequency, there'd be fewer lines until the picture stood up.

I used 'sudo rpi-update 993f47507f287f5da56495f718c2d0cd05ccbc19' to restore the original as there's no need to upgrade kernels unless there's a meaningful upgrade that betters your box.

It's my own fault really. I had broken Rule #1 of Maintenance: "If it ain't broke, don't <expletive> fix it!!

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