Chip would support firmware upgrades with an external SPI flash, but this device doesn't have oneĬSL USB3.0 Card reader, All-in-One, CSL-Nr 25048 ¶.ISY USB 2.0 Universal card reader ICR 2100 (Mediamarkt 20141106) ¶ Firmware code can be downloaded through the USB interface to the RTS5111, and then be written into external flash memory automatically. The RTS5111 has an internal ROM for MCU programs, and provides an external program flash memory interface for firmware update purposes.External SPI Flash is optional according to datasheet, but the particular Hama card reader does contain a flash chip.With the external Serial flash interface, the control firmware could be easily re-configured through Datasheet found on obscure Chinese site.Hama USB3.0 SD/MicroSD Reader (Mediamarkt 20141106) ¶ Processor (unknown architecture) with ROM.Noname (yellow) USB 2.0 SD Card reader from lab ¶ Chip doesn't even support external SPI Flash.=> Most likely vulnerable, practical reversing and firmware patching could start very quickly => Contains binary firmware file 0551.bin with 64 KiB size => Heuristics indicate that the file is raw 8051 code mapped directly into the code address space of the 8051. We could unsolder and read out the flash chip to dump the firmwareįirmware upgrades (including Windows tools) available, two different firmware images: Version TS22 and Version 551.It supports ISP (In System Programming) for firmware upgrade from the external SPI Flash via USB port => Most likely vulnerable.8051 Core with ROM (probably bootloader and/or default firmware) and RAM.SPI Flash is probably used for firmware.
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