C-U0007 With an OTP part?

[RChadwick7]

I have a Logitech C-U0007 receiver, and tried flashing the firmware. As it always failed, I broke it open to see about programming it with SPI. However, it appears I might have an OTP part. Could anyone confirm?
The chip is marked:

NRF N
LU1PA
1111AP

[danielpops]

@RChadwick7 I was able to flash my Logitech C-U0007 receiver over USB using ubuntu just fine.

[RChadwick7]

I was too actually. I purchased a number of C-U0007 receivers, and all programmed fine except for that one.

[FFY00]

It probably has a signed bootloader, bootloader version 4 and up requires the firmware to be signed by Logitech.

[geekcui]

It's OTP. I bought 2 C-U0007, both of them are LU1PA.
I was told by the seller, C-U0007 means nothing, there are several different versions of C-U0007.
There are few more dongles still on the way, Hopefully there's at least one usable.

[DRCRecoveryData]

I have a Logitech C-U0007 receiver, and tried flashing the firmware. As it always failed, I broke it open to see about programming it with SPI. However, it appears I might have an OTP part. Could anyone confirm?

The chip is marked:

NRF N

LU1PA

1111AP

check my post:

I think i solved all issue in here of signed bootloader:

https://twitter.com/drcrecovery/status/1671590705238781953?s=46

[zulfi0]

hi @DRCRecoveryData could you tell me how you flash the firmware on signed bootloader ?

[DRCRecoveryData]

hi @DRCRecoveryData could you tell me how you flash the firmware on signed bootloader ?

you need to upload new bootloader via spi with raspberry and nrf firmware i provide schematic from the top of topic, if you have issue contact me via telegram and discord