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A slicer is a toolpath generation software used in 3D printing.It facilitates the conversion of a 3D object model to specific instructions for the printer. The slicer converts a model in STL (stereolithography) format into printer commands in G-code format.
This is achieved by only transferring the differences between the old firmware and the new firmware, rather than transmitting the entire firmware. A delta of the old and new firmware is produced through a process called diffing; then, the delta file is distributed to the end-device, which uses the delta file to update itself. [8]
This is an especially big concern for embedded devices, in which upgrades are typically all-or-nothing (the upgrade is a firmware or filesystem image, which isn't usable if it's only partially written), and which have limited ability to recover from a failed upgrade. [5]
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.
This pattern can be generalized to updating. In the event of an update, the hot spare would activate, the main system would update, and then the updated system would resume control. The earliest true Dynamic Software Updating system is DYMOS (Dynamic Modification System). [4]
Rolling release, also known as rolling update or continuous delivery, is a concept in software development of frequently delivering updates to applications. [ 1 ] [ 2 ] [ 3 ] This is in contrast to a standard or point release development model which uses software versions which replace the previous version.
Custom firmware is commonly seen in the PlayStation Portable handhelds released by Sony. Notable custom firmware include M33 by Dark_AleX as well as those made by others such as the 5.50GEN series, Minimum Edition (ME/LME) and PRO. Custom firmware is also seen in the PlayStation 3 console. Only early "Fat" and Slim (CECH-20xx until early CECH ...
The Software Upgrade Protocol (or SUP) System is a set of programs developed by Carnegie Mellon University in the 1980s [1] (as was the Andrew File System).It provides for collections of files to be maintained in identical versions across a number of machines.