Android ROM

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Android ROM

(Android Read Only Memory) A file containing the executable instructions (a system image) of an Android OS and affiliated apps. The "stock ROM" comes installed on the phone or tablet, while a "custom ROM" comes from a third party. The custom ROM is either a uniquely modified OS, such as Cyanogen, or a stock version made available for older devices or for new devices before the vendor release date. See CyanogenMod.

Flashing the ROM
Flashing a ROM means installing the system image into the device's internal flash memory. Flash memory holds the Android's firmware, the same as most portable devices with an embedded OS.

A Rather Misleading Name
The Android ROM is actually flash memory, not ROM. A ROM is read-only-memory that once programmed is unalterable. See ROM, flash memory, Android recovery image and Android rooting.
References in periodicals archive ?
The rollout is slated to begin April 12 via a ROM upgrade.
It also comes with a rechargeable lithium ion battery, Flash ROM upgrade and a built in USB port.
It will be available through a combination of ROM Upgrade and RAM installable applications.
The AlphaSmart 2000 IrDA Upgrade Kit, which includes the required lens and ROM upgrade, will be available in October for all AlphaSmart 2000 keyboards at a list price of $30.