I'd like to ask a few open support related questions to the  @Coinkite team. After updating the firmware on my Coldcard MK4 I am now experiencing a frozen screen and can not use the device. The device freezes before the PIN screen.
The Coinkite team have responded to my posts in the Telegram channel and also via email but I haven't received any answers to the main questions I would like answered:
- Is this a wider issue with other users after upgrading the firmware to 5.4.0?
- Is the device able to be restored or will it be unusable from now?
I have had this device for 2 years and have had no issues and from my own research think it's a good product.
I have a backup which I can restore so am not at risk of losing coins but am trying to find out what caused this and if I can remedy it.
If anyone else has experienced this or has any suggestions (other than requesting me seed phrase 😄 ) I'd like to hear them.
 @NVK
 @ODELL
 @CodyEllingham
 @BTCNautilus