Software updates usually carry fixes to previous problems and improve the functionality of the product, whether this product is software, hardware, or otherwise.

But what’s happening recently with the Wasabi wallet is the opposite.

Privacy-focused Wasabi has warned its wallet users that they should not update the wallet if they are using a Trezor device.

If you do, you will lose temporary access to your bitcoins, as the update process triggers an error in the Trezor hardware wallet code, thus locking up your bitcoins and temporarily not being able to control your bitcoins.

Accordingly, this warning was issued, which in turn, we convey to Arab users, that they should not update the aforementioned wallets until the technical problems associated with the program are fixed.

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The alert to the problem came last Wednesday, when SatoshiLabs, the company behind the Trezor hardware wallet, notified its customers about a vulnerability.

Wrote Mr. Makato, a software developer at Wasabi Wallet, said that the SatoshiLabs developers fixed the issue with Trezor, but the update messed things up on services like Wasabi and BTCPay.

Wasabi Wallet is a privacy-focused Bitcoin wallet that has the CoinJoins protocol built into it.

CoinJoins masks bitcoin transactions by shuffling a lot of transactions together in batches before sending them elsewhere. Because bitcoins are mixed together, it is difficult to identify those executing the transactions.

Wasabi Wallet supports Trezor hardware wallets, to allow them to send bitcoins using CoinJoins.

Wasabi wallet sends a partially signed bitcoin transaction to Trezor wallet for Trezor to confirm the transaction once its owner signs it.

But Trezor’s new update does not work with Wasabi, since Trezor believes that a partially signed Bitcoin transaction is invalid.

Trezor could also have to consume a lot of power and space to access past transaction data, which could make the partially signed bitcoin transaction file too big for Trezor.

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Makato wrote:

In light of the above issues, we at Wasabi Wallet are urging our users with Trezor hardware wallets to postpone updating their devices.

He added:

We advise users not to update Wasabi wallets until the fixes are finished due to the possibility of malicious actors distributing a malicious copy of Wasabi wallets and exploiting the vulnerability.

So until the bug is fixed, don’t update now.

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