New HW wallet announced: COLDCARD Q1

[DaveF]

I would think (and might be wrong) that what they are calling "boot rom" is the regular boot loader for the STM32L4S5VIT6
Anyone using any ARM chip is going to have to have a boot loader (think of it as a PC BIOS)

If anyone is motivated take a look at:

https://ghidra-sre.org/
or
https://www.radare.org/r/

And you can probably de-compile it.

Since it's part of the DFU I don't see how it could be anything else.

As to if it's a stock one or not it does get back to the point of you NEED a boot loader for the ARM CPU, be it a coldcard a trezor a ledger or whatever. Does any other wallet maker give it to you to download? If not then why not? If it's the stock one from the CPU maker, great. If not then NOTHING else matters. Kind of like on a PC if your BIOS / UEFI is compromised nothing you do after that point matters in terms of security.

-Dave

[Pmalek]

We know that the YouTuber Ben from BTC Sessions is sponsored by Coinkite and Coldcard. He mentions their hardware wallets in all of his videos. Think of that what you want.
Anyways, he will be giving away a free Coldcard Q1 each month to subscribers of his email newsletter. You will automatically enroll in the giveaway every month you are subscribed to the newsletter.

If you want to try your luck, you can subscribe at https://www.btcsessions.ca/. Enter your email in the field towards the top of the page.

[Pmalek]

I looked around a bit to see if any hardware wallet brands have any discounts for Bitcoin Pizza Day and found that only Coinkite offers something.
A 15% discount is valid for all products, like Coldcard's and others, today only. The promo code gets automatically added during checkout.

[Forsyth Jones]

Coldcard has just released a new color option for the ColdCard Q: Jade, which is supposed to be the same as the Green color.

In the promotional image on X, they attached a 5sec video of what looks like a redesigned version of the ColdCard Q. Some users questioned it and speculated that it could be a ColdCard Q2 or something like that. But it seems like it's just a new color.



https://x.com/COLDCARDwallet/status/1930271827118699010

The new color is already available for purchase on their website: https://store.coinkite.com/store/category/coldcard-q

No discount was identified for the new product color option.

[shadallion]

Coldcard Q users - are you able to set up different wallets on the same device?  Meaning, can I set BTC aside for different purposes using the same hard- wallet?  Doesn’t have to have separate paraphrases

[tenant48]

Coldcard Q users - are you able to set up different wallets on the same device?  Meaning, can I set BTC aside for different purposes using the same hard- wallet?  Doesn’t have to have separate paraphrases

Yes, you can use different Bitcoin accounts by changing the account number in the derivation paths.
https://coldcard.com/docs/paths/

[Forsyth Jones]

Coldcard Q users - are you able to set up different wallets on the same device?  Meaning, can I set BTC aside for different purposes using the same hard- wallet?  Doesn’t have to have separate paraphrases

Yes, you can use different Bitcoin accounts by changing the account number in the derivation paths.
https://coldcard.com/docs/paths/

Not only that, you can have more than one wallet through the Temporary Seed (Ephemeral Seed), where users can store a temporary Seed. You must enable the Seed Vault feature to use it.

You can also access different wallets derived from your original seed through passsphrases (each passphrase accesses a specific wallet).

I recommend reading all the mentioned resources to use safely, dramatically decreasing the chances of operational errors.

[nvK]

Another interesting update ergarding Coldcard Q crap wallet,
First they lied about having open source code, but later they changed it to source viewable, but even that is not exactly true.
Coldcard is using called Boot ROM, according to them this is piece of code stored in ROM, but they are hiding the fact that this code is totally closed source, you can't even view it.
If you ask them about this issue they will avoid the answer and block you on social media, like they have been doing for all other issues.
This is another confirmation how Coldcard and NVK continues to deceive everyone including their own customers.

Boot ROM is a piece of code stored in a Read Only Memory (ROM). It is the very first code executed by the CPU when it is powered on. This code contains critical instructions to configure the system-on-chip (SoC) and allow the SoC to execute legitimate applications.

https://coldcard.com/docs/glossary/#boot-rom-security

Not Open Source!
Not Verifiable Source Code!

STOP using Coldcard devices!

Answer here https://github.com/Coldcard/firmware/tree/master/stm32/mk4-bootloader

[Pmalek]

Coinkite is currently offering a 10% discount on their Coldcard hardware wallets and the Tapsigner. It's a limited time offer but the store doesn't mention when it will expire.
You need to use the promo code "ABRACADABRA" to take advantage of it.

Another thing I noticed while looking at their online shop is the 2% discount when you purchase items with bitcoin. Didn't this discount use to be 5% in the past?