Reference for the Atmel AT45DB041B, a 4-megabit serial DataFlash memory as the name states, in a 233 KB PDF.

Spanish manual on unlocking, releasing and flashing mobile phones, a 3.27 MB PDF. No brand, model or tool is named in the title, so expect general procedures covering…

PDF titled in Spanish as a software course, catalogued under schematics but almost certainly training material rather than a circuit diagram.

PDF document of about 908 KB whose Persian title translates roughly as a collection of Flash Tools errors.

Short 170 KB PDF titled ME Region, indexed under schematics, without any board or brand named.

Beginner guide in Spanish for choosing the correct Samsung firmware, a 304 KB PDF. It likely explains how to read the model code, region or CSC, and the bootloader…

Spanish guide, 213 KB PDF, whose title translates as how to read Samsung firmware. No model or board is named, so it is a general how-to rather than a dump or schematic.

Schematic diagram for a laptop mainboard marked MT50IN, revision 1.0, supplied as a PDF packed inside a RAR archive of about 987 KB.

Compressed schematic set for the Lenovo U31-70 on the Compal LA-C311P mainboard, with the project codes AIVS3 and AIVE3 given in the name.