I've got a founders edition that crashes when trying to sign via QR. Gets to c.a. 40 of 300 odd. Firmware update fixes this?
Discussion
What firmware version are you running and with which wallet are you signing?
Also, do you mean 40/300 QR codes? That sounds like a monstrous transaction.
Sparrow - simple test send of a few SATs from a multisig to another wallet. Firmware not sure. Travelling so will have to revert.
Might have been mined coins from F2Pool