: To fit within small firmware storage regions, the image file size is often strictly limited, frequently to under 30KB or 60KB depending on the model generation .
Advanced users have developed tools that offer more control but come with increased risk.
Enthusiasts and technicians often seek to change this image for:
When modifying firmware, compliance with exact system constraints is critical. A single deviation in file format or dimensions can cause the BIOS flash utility to reject the image or, worse, corrupt the display layout during boot. Bitmap (BMP) Constraints lenovo oem logo bmp 120x120 patched
: Re-applying the official OEM branding after replacing a motherboard or performing a generic BIOS update that wiped the original image. Methods for Applying the Patched Logo
Modifying motherboard firmware carries inherent risks. A corrupt BIOS patch can brick your machine, requiring a physical chip desoldering or a hardware programmer to recover. Always back up your original, unpatched BIOS ROM before flashing a custom logo. To help you move forward safely with your project, tell me:
If your storage drive is encrypted using Windows BitLocker, a change in the BIOS signature or configuration can trigger a recovery mode prompt. Always back up your BitLocker recovery key before modifying system firmware. : To fit within small firmware storage regions,
While modern screens feature high resolutions (like 1080p or 4K), Lenovo's core firmware architecture often allocates a precise, fixed pixel canvas for the embedded OEM sub-logo. A constraint is common for small-badge logos—such as the secondary logos displayed alongside Intel, AMD, or Energy Star certifications at the bottom or corner of the screen. Using a patched 120x120 BMP ensures that the image matches the exact byte allocation expected by the firmware module, avoiding stretching, artifacting, or memory overflows. The 120x120 Canvas Specifications
Select Save As or Export As and choose BMP. In the advanced settings dialog: Select the 24-bit or 8-bit option.
For decades, PC enthusiasts and IT professionals have sought to personalize the boot experience of Lenovo laptops and desktops. Whether it’s a corporate branding requirement, a digital signage project, or simply the desire to replace the default "Lenovo" splash screen with a custom image, one specific file format has become the holy grail of low-level customization: the . A single deviation in file format or dimensions
: For older or consumer-grade Lenovo systems lacking official tool support, developers extract the BIOS ROM using a SPI programmer or software dump tool. They open the ROM in UEFITool , locate the raw section containing the OEM logo GUID, replace the body with the patched 120x120 BMP, and flash the modified image back to the chip. Risks and Best Practices
To understand the quest for a patched solution, you must first understand the root of the limitation. Between the late 2000s and mid-2010s, Lenovo (like many OEMs—Dell, HP, Acer) used a specific UEFI/BIOS implementation that stored the boot logo in a dedicated firmware volume. The constraints were brutal:
This specific size works across ThinkPad, IdeaPad, and Legion product lines. Why Use a Patched Logo?