4FFF N618

4FFF N618 is a discontinued electronic-book reader developed by an Indian Company, Condor Technology Associates, and based on a Linux platform. The device is sold under various brand names worldwide.

Features
4FFF N618 provides a 16 levels of grayscale SiPix touchscreen display for viewing digital content. Pages are turned using the buttons on the device. The N618 connects to the internet through an available Wi-Fi connections. Users can read books without a wireless connection: disconnecting the wireless connection can prolong the battery's charge for up to 29 days.

Specifications
The Display is an electronic paper touchscreen from SiPix with 800×600 pixels (4:3) on 6 inch (167 ppi density) and 16 levels of grayscale.
 * CPU
 * Samsung 2416 ARM9 @ 400 MHz
 * OS
 * Linux 2.6.23
 * Memory
 * 128 MB (MDDR)
 * 2 GB (NAND)
 * External microSD/microSDHC (up to 16 GB)
 * Connectivity
 * Wi-Fi b/g
 * microUSB high speed
 * audio jack
 * Miscellaneous
 * 1530 mAh, 3.7 V
 * 240 gram
 * Reading mode
 * 10.000 pages (Wi-Fi off)
 * 3.000 pages (Wi-Fi on)
 * Stand by mode: 700 hours

Formats supported

 * Text
 * ePUB
 * HTML
 * PDF
 * RTF
 * TXT
 * Picture
 * BMP
 * JPEG
 * PNG
 * Audio
 * MP3

Sold as
The device is sold worldwide under various brand names.
 * Asia
 * India: eGriver Touch

Across Europe available as:
 * Europe
 * France: OYO (as released in October 2010 by Medion, chapitre.com/Direct Group Bertelsmann)
 * Germany, Austria, Switzerland: OYO (Medion, Thalia)
 * Switzerland: ImCoSys ereader
 * Italy: DeVo eVreader
 * Netherlands: ProMedia eBook Reader; Icarus Sense E650SR; OYO (Medion, Selexyz)
 * Poland: OYO (Medion, Empik)
 * Spain: Nvsbl L337 / Booq Avant / Papyre 6.2
 * Russia: Mr. Book, One-XT, Айчиталка
 * Bulgaria: Prestigio PER5062B
 * Turkey: Reeder Reeder2
 * Icarus Sense


 * Middle East
 * Israel: E-vrit


 * North America
 * Canada: Pandigital Novel 6" Personal eReader
 * United States: Qisda QD060B00 / Pandigital Novel 6" Personal eReader


 * South America
 * Brazil: Positivo Alfa (not supports any audio file)

Modification
Being that the hardware utilizes Linux-based software it can be changed or improved to their heart's content. The firmware is labeled as “QT Software” and varies from vendor to vendor. The upgrade contains multiple image files with the extension of img, along with other system files.

Flashing to upgrade the firmware can be taken advantage of as it does not seem to check if the version that is being installed is older. Due to this, using firmware made by the other vendors on the model each sold in particular is possible.

Dual-boot
The devices seem to contain a native dual-boot capability. When a device specific key combination is pressed during power-on any linux-kernel + ramdisk combination is booted from the sd-card.