SpacemiT (Bianbu) has announced a proactive recall of K3 CoM 260 Kit 8GB units shipped between August 4 and 14, 2026 due to a probabilistic PCB failure risk caused by a substrate material change. Other batches and 4GB / 16GB variants are not affected.
The affected product
- Product: K3 CoM 260 Kit / K3 CoM260 core board - Memory configuration: 8GB only - Ship window: 2026-08-04 to 2026-08-14 (inclusive) - Issue: probabilistic PCB failure, attributed to a substrate material change made by the PCB vendor during that production windowOther batches (including earlier and later 8GB production, and 4GB / 16GB variants) are not affected. SpacemiT has already contacted the known end customers through its distribution channels and is arranging replacement or refund for the affected boards.
What SpacemiT is doing 1. Proactive recall - the company and its channel partners have reached out to every end customer in the affected shipping window and are scheduling replacement or refund. 2. One-by-one QA on returned units - to bound the actual failure rate and confirm the failure mechanism. 3. PCB process fix and tightened inspection cadence - the root-cause is a substrate vendor change; the process has been corrected and additional in-line inspection steps have been added. 4. End-to-end supply chain audit - with the PCB vendor to make sure raw material and lamination parameters meet spec going forward.What you should do
- If you bought a K3 CoM 260 Kit 8GB between 2026-08-04 and 2026-08-14, wait for the channel partner to contact you, or proactively reach out to developer@spacemiit.com with your order number and serial number. - If you are using the K3 CoM 260 Kit 8GB outside that shipping window, you are not affected. SpacemiT explicitly states all other production batches have passed the new inspection standards and are safe to continue using. - If you publish or review K3-based products, please cross-link the original notice so end users can find it quickly.Why this matters for the RISC-V ecosystem
The K3 is SpacemiT's first high-end RISC-V AI CPU (8 X100 + 8 A100 cores, 60 TOPS, RVA23-compliant) and the CoM 260 form factor is the canonical developer / SI board for it. The recall is a routine but unwelcome event for any new SoC platform, and the way SpacemiT has handled it - public notice, channel-partner-driven replacement, root cause published, process fix already implemented - is the right shape of response for an early-stage RISC-V ecosystem that needs to demonstrate maturity to commercial integrators.If you are designing the K3 CoM 260 into a downstream product, the recall does not change the long-term roadmap or the parts availability for the unaffected batches, but it is a useful reminder to keep a small safety stock of known-good boards on hand during the first 90 days of any new RISC-V SoC platform.
AcknowledgmentsThanks to the SpacemiT team for handling this transparently and to the community member _ganboing for asking for affected serial numbers to be published so that end users can self-verify. Both are healthy signs for the RISC-V hardware ecosystem.
Source: 'Apology and Recall Notice for K3 CoM 260 Kit Partial-Batch PCB Failure Risk' on the SpacemiT developer forum, https://forum.spacemit.com/t/topic/1609.json