Endless reboot loop after firmware downgrade

[Herrminator]

After (seemingly successfully) downgrading my 32PFL5405H/12 from version Q5521-0.140.23.0 to Q5521-0.75.60.1 because of a media scaling issue, the TV endlessly keeps rebooting itself.

Inserting the USB-stick with any firmware version doesn't help (USB is not being accessed).

Any ideas or similar experiences? Is there a way to reset the TV to factory settings (button press, hold, or similar)?

Thanks!

[koenraad]

You might try pressing off on the remote during the startup of a reboot. I always stops my TV (8000 series) I need to do this at a specific time during the reboot proces. Do you use a CAM CI module?

[Herrminator]

You might try pressing off on the remote during the startup of a reboot. ... Do you use a CAM CI module?

Unfortunately, this didn't help :-(
The TV doesn't react to any key presses.
And there's no CAM CI present.

But thanks for the tip!

[Vampire]

To recover a TV which had a downgrade without empty channel map, follow next steps:

1. TV is "off" via mains switch.

2. Press the "arrow down" key on the RC continuously.

3. While pressing "arrow down", switch the TV "on" via the mains switch.

4. You can release "arrow down" when you see the upgrade menu appearing.

5. Now upgrade the TV again to the latest SW version

[Herrminator]

Thanks a lot!
Unfortunately the TV has gone to customer service before I was able to read your post.

But who knows, it might be helpful in the future...

[Philips]

Thanks a lot! Unfortunately the TV has gone to customer service before I was able to read your post. But who knows, it might be helpful in the future...

Dear Herrminator,
Didn't you receive a PM from me with a instruction how to downgrade?
Please respond, so we can check if the PM system works well.

[Herrminator]

Please respond, so we can check if the PM system works well.

It does!

I just wasn't home until the pick-up, so I got this to late

I just cannot reply to PMs from 'Philips'

[Philips]

...I just cannot reply to PMs from 'Philips'

Don't know if this is serious, considering the smiley, but on the bottom right of the PM there is a link called "Reply With Quote". Click this, and you can reply to me. Feedback is important for us. Tnx.

[Herrminator]

Don't know if this is serious, considering the smiley, but on the bottom right of the PM there is a link called "Reply With Quote". Click this, and you can reply to me. Feedback is important for us. Tnx.

Well, if I do a "Reply with quote", I get:

The following errors occurred with your submission
* Philips has chosen not to receive private messages or may not be allowed to receive private messages. Therefore you may not send your message to him/her.

If you are trying to send this message to multiple recipients, remove Philips from the recipient list and send the message again.

But the PMs work alright!

[Philips]

Thanks for your reply. I was not aware of this setting.
I've adapted it, so you should be able to reply now.
I will send a test PM to you. Please see if u can reply....

[darence]

Hello, I've got exactly the same TV model (32PFL5405H/12) and I would like to downgrade my software. Would you be so kind to give me some instructions? Where to find older FW versions? Thanks!

[Herrminator]

Where to find older FW versions?

When I did the (failed) downgrade, I had the old downloaded versions still available.
I don't know where (and if) official old downloads are available from Philips...

[darence]

Do you still have them by any chance?

[Herrminator]

Do you still have them by any chance?

I'm afraid not. After the downgrade disaster, I decided it's not worth keeping the 80MB+ in my download directories...

[billbond4]

Can you post or PM me the instructions on how to downgrade? im thinking that I might downgrade from
Q5521_0.140.25.0 to Q5521_0.140.23.0