Xm+ Firmware

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Incomputing, firmware is software that provides low-level control of computing device hardware. For a relatively simple device, firmware may perform all control, monitoring and data manipulation functionality.For a more complex device, firmware may provide relatively low-level control as well as hardware abstraction services to higher-level software such as an operating system.

Firmware is found in a wide-range of computing devices including personal computers, phones, home appliances, vehicles, computer peripherals and in many of the digital chips inside each of these larger systems.

Ascher Opler used the term firmware in a 1967 Datamation article, as an intermediary term between "hardware" and "software". Opler projected that fourth-generation computer systems would have a writable control store (a small specialized high-speed memory) into which microcode firmware would be loaded. Many software functions would be moved to microcode, and instruction sets could be customized, with different firmware loaded for different instruction sets.[2]

As computers began to increase in complexity, it became clear that various programs needed to first be initiated and run to provide a consistent environment necessary for running more complex programs at the user's discretion. This required programming the computer to run those programs automatically. Furthermore, as companies, universities, and marketers wanted to sell computers to laypeople with little technical knowledge, greater automation became necessary to allow a lay-user to easily run programs for practical purposes. This gave rise to a kind of software that a user would not consciously run, and it led to software that a lay user wouldn't even know about.[3]

As originally used, firmware contrasted with hardware (the CPU itself) and software (normal instructions executing on a CPU). It was not composed of CPU machine instructions, but of lower-level microcode involved in the implementation of machine instructions. It existed on the boundary between hardware and software; thus the name firmware. Over time, popular usage extended the word firmware to denote any computer program that is tightly linked to hardware, including BIOS on PCs, boot firmware on smartphones, computer peripherals, or the control systems on simple consumer electronic devices such as microwave ovens, remote controls.

In some respects, the various firmware components are as important as the operating system in a working computer. However, unlike most modern operating systems, firmware rarely has a well-evolved automatic mechanism of updating itself to fix any functionality issues detected after shipping the unit.

A computer's firmware may be manually updated by a user via a small utility program. In contrast, firmware in mass storage devices (hard-disk drives, optical disc drives, flash memory storage e.g. solid state drive) is less frequently updated, even when flash memory (rather than ROM, EEPROM) storage is used for the firmware.

Most computer peripherals are themselves special-purpose computers. Devices such as printers, scanners, webcams, and USB flash drives have internally-stored firmware; some devices may also permit field upgrading of their firmware.

Consumer appliances like gaming consoles, digital cameras and portable music players support firmware upgrades. Some companies use firmware updates to add new playable file formats (codecs). Other features that may change with firmware updates include the GUI or even the battery life. Smartphones have a firmware over the air upgrade capability for adding new features and patching security issues.

Since 1996, most automobiles have employed an on-board computer and various sensors to detect mechanical problems. As of 2010[update], modern vehicles also employ computer-controlled anti-lock braking systems (ABS) and computer-operated transmission control units (TCUs). The driver can also get in-dash information while driving in this manner, such as real-time fuel economy and tire pressure readings. Local dealers can update most vehicle firmware.

Flashing[5] involves the overwriting of existing firmware or data, contained in EEPROM or flash memory module present in an electronic device, with new data.[5] This can be done to upgrade a device[6] or to change the provider of a service associated with the function of the device, such as changing from one mobile phone service provider to another or installing a new operating system. If firmware is upgradable, it is often done via a program from the provider, and will often allow the old firmware to be saved before upgrading so it can be reverted to if the process fails, or if the newer version performs worse. Free software replacements for vendor flashing tools have been developed, such as Flashrom.

Sometimes, third parties develop an unofficial new or modified ("aftermarket") version of firmware to provide new features or to unlock hidden functionality; this is referred to as custom firmware. An example is Rockbox as a firmware replacement for portable media players. There are many homebrew projects for various devices, which often unlock general-purpose computing functionality in previously limited devices (e.g., running Doom on iPods).

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.

The Moscow-based Kaspersky Lab discovered that a group of developers it refers to as the "Equation Group" has developed hard disk drive firmware modifications for various drive models, containing a trojan horse that allows data to be stored on the drive in locations that will not be erased even if the drive is formatted or wiped.[7] Although the Kaspersky Lab report did not explicitly claim that this group is part of the United States National Security Agency (NSA), evidence obtained from the code of various Equation Group software suggests that they are part of the NSA.[8][9]

Researchers from the Kaspersky Lab categorized the undertakings by Equation Group as the most advanced hacking operation ever uncovered, also documenting around 500 infections caused by the Equation Group in at least 42 countries.

Custom firmware hacks have also focused on injecting malware into devices such as smartphones or USB devices. One such smartphone injection was demonstrated on the Symbian OS at MalCon,[12][13] a hacker convention. A USB device firmware hack called BadUSB was presented at the Black Hat USA 2014 conference,[14] demonstrating how a USB flash drive microcontroller can be reprogrammed to spoof various other device types to take control of a computer, exfiltrate data, or spy on the user.[15][16] Other security researchers have worked further on how to exploit the principles behind BadUSB,[17] releasing at the same time the source code of hacking tools that can be used to modify the behavior of different USB devices.[18]

Starting from GRP260x firmware 1.0.5.26, Grandstream GRP260x IP phones support Click2Dial add-in on various web browsers.

HERE is the User Guide.

Click on the link below for the extension for each web browser.

For Chrome

For Firefox

For Edge

For Safari

Firmware is programming that's written to a hardware device's non-volatile memory. Non-volatile memory is a form of static random access memory where the content is saved when a hardware device is turned off or loses its external power source.

Hardware makers use embedded firmware to control the functions of various hardware devices and systems, much like a computer's operating system (OS) controls the function of software applications. Firmware may be written into read-only memory (ROM), erasable programmable read-only memory (EPROM) or flash memory.

American computer scientist Ascher Opler is said to have coined the phrase firmware in a 1967 issue of the publication Datamation. He used the term to describe a type of microprogram in between hardware and software.

Firmware updates are often issued to fix bugs, prevent firmware hacks, roll out new features, improve security or interact with new media. Firmware updates consist of code that tells the hardware how to behave in a new or modified way.

Some internet-connected devices regularly check for new firmware and automatically download and install it. Other device manufacturers require the user to visit the manufacturer's website to download and install firmware updates manually. Manufacturers release updates on a regular basis.

The frequency of firmware updates will vary depending on the device. The firmware in a smart light bulb may not need frequent updates. However, the firmware on a smart thermostat may need to be updated periodically to remain compatible with smartphone OS updates. Smartphones commonly automate firmware upgrades alongside software updates so the phone remains functional and users don't have to manually update firmware versions to coincide with software updates. The process of remotely updating firmware by downloading upgrades from the service provider is sometimes referred to as firmware over the air.

Many electronic devices also require that the device remains powered on while updating firmware so that the update doesn't get corrupted. Corrupting a device's firmware can damage some devices or cause them to malfunction.

Firmware is software that provides basic machine instructions that allow the hardware to function and communicate with other software running on a device. Firmware provides low-level control for a device's hardware. For this reason, it is sometimes called "software for hardware." Another distinguishing feature is that firmware is not generally designed to be user friendly.

Software is designed for users to interact with to accomplish specific tasks. It sits above the firmware, abstracted from the hardware, and uses the firmware to communicate with the underlying hardware. Software is more complex and not as bound to the underlying hardware.

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