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A Bluetooth stack is software that is an implementation of the Bluetooth protocol stack.. Bluetooth stacks can be roughly divided into two distinct categories: . General-purpose implementations that are written with emphasis on feature-richness and flexibility, usually for desktop computers.
Bluetooth operates at frequencies between 2.402 and 2.480 GHz, or 2.400 and 2.4835 GHz, including guard bands 2 MHz wide at the bottom end and 3.5 MHz wide at the top. [25] This is in the globally unlicensed (but not unregulated) industrial, scientific and medical ( ISM ) 2.4 GHz short-range radio frequency band.
Version 2.0: black (matching black Hub Phone was available) Version 3.0: black (Hub Phones and DECT phones are not compatible) released on 29 January 2011. Version 4.0: black (Hub Phones and DECT phones are not compatible) released on 10 May 2013. Version 5.0 (HH5A/5B): black, released in mid-October 2013; Smart Hub (Home Hub 6A /6B), mid-2016
Odin is a utility software program developed and used by Samsung internally which is used to communicate with Samsung devices in Odin mode (also called download mode) through the Thor (protocol). It can be used to flash a custom recovery firmware image (as opposed to the stock recovery firmware image) to a Samsung Android device .
SCO packets may be sent every 1, 2, or 3 time slots. Enhanced SCO (eSCO) links allow greater flexibility in setting up links: they may use retransmissions to achieve reliability, allow for a wider variety of packet types and for greater intervals between packets than SCO, thus increasing radio availability for other links.
1.0 — Basic remote control commands (play/pause/stop, etc.) [6] 1.3 — all of 1.0 plus metadata and media-player state support [7] The status of the music source (playing, stopped, etc.) Metadata information on the track itself (artist, track name, etc.). 1.4 — all of 1.3 plus media browsing capabilities for multiple media players [8]
Firmware hacks usually take advantage of the firmware update facility on many devices to install or run themselves. Some, however, must resort to exploits to run, because the manufacturer has attempted to lock the hardware to stop it from running unlicensed code. Most firmware hacks are free software.
Notable custom-firmware projects for wireless routers.Many of these will run on various brands such as Linksys, Asus, Netgear, etc. OpenWrt – Customizable FOSS firmware written from scratch; features a combined SquashFS/JFFS2 file system and the package manager opkg [1] with over 3000 available packages (Linux/GPL); now merged with LEDE.