{"id":1733,"date":"2026-08-18T08:29:58","date_gmt":"2026-08-18T08:29:58","guid":{"rendered":"https:\/\/www.bleuio.com\/blog\/?p=1733"},"modified":"2026-08-18T08:34:26","modified_gmt":"2026-08-18T08:34:26","slug":"bleuio-firmware-v2-8-0-5","status":"publish","type":"post","link":"https:\/\/www.bleuio.com\/blog\/bleuio-firmware-v2-8-0-5\/","title":{"rendered":"BleuIO Firmware v2.8.0.5 Released: Improved GATT Discovery Stability"},"content":{"rendered":"\n

We\u2019re excited to announce the release of BleuIO firmware v2.8.0.5<\/strong>. This release focuses on making GATT service and characteristic discovery more reliable, particularly when working with complex Bluetooth Low Energy peripheral devices that expose very large GATT databases.<\/p>\n\n\n\n

Firmware v2.8.0.5 introduces important stability improvements, increases the number of characteristics BleuIO can handle within a service, and optimizes how discovered GATT data is processed and returned.<\/p>\n\n\n\n

We recommend that all BleuIO users update to the latest firmware.<\/p>\n\n\n\n

What\u2019s New in Firmware v2.8.0.5<\/h2>\n\n\n\n

Improved Discovery Stability<\/h4>\n\n\n\n

One of the main improvements in this release addresses an issue that could cause BleuIO to unexpectedly reset while performing service and characteristic discovery on peripheral devices with exceptionally large GATT databases.<\/p>\n\n\n\n

With firmware v2.8.0.5, the discovery process has been redesigned to handle these large and complex profiles much more efficiently. This means more reliable discovery when connecting BleuIO to BLE devices that expose many services, characteristics, values, and descriptors.<\/p>\n\n\n\n

Support for Larger GATT Profiles<\/h4>\n\n\n\n

We have also increased BleuIO\u2019s internal profile capacity.<\/p>\n\n\n\n

BleuIO can now comfortably support up to 165 characteristics within an individual service<\/strong>, allowing it to work with significantly larger peripheral profiles without running out of memory. This is especially useful when developing or debugging applications that interact with feature-rich BLE devices containing extensive GATT structures.<\/p>\n\n\n\n

A New Streaming Discovery Architecture<\/h2>\n\n\n\n

Behind these improvements is an important change to the way BleuIO processes GATT discovery data.<\/p>\n\n\n\n

Previous firmware versions used a hierarchical caching model that temporarily stored discovered GATT information in RAM before presenting the results. With v2.8.0.5, BleuIO now uses a sequential streaming discovery model<\/strong>. Instead of building a large representation of the peripheral’s GATT database in memory, BleuIO processes metadata dynamically and sends discovered information to the USB interface as it becomes available.<\/p>\n\n\n\n

This significantly reduces memory usage and improves connection stability when discovering large peripheral profiles.<\/p>\n\n\n\n

AT Commands Affected<\/h4>\n\n\n\n

The new streaming architecture applies to the following GATT discovery commands:<\/p>\n\n\n\n