Z_INFO_SERVICE_LENOVO_ThinkBook_15_G3_ACL_Laptop_Type_21A4_GLV3B.RAR

TXTAbout Z INFO SERVICE LENOVO ThinkBook 15 G3 ACL Laptop Type 21A4 GLV3B BIOS / EC firmware

Z INFO SERVICE LENOVO ThinkBook 15 G3 ACL Laptop Type 21A4 GLV3B is a Lenovo 21A4 / GLV3B BIOS / EC firmware dump for board LA-K062P — password unlock, tested. It is packed in a RAR archive of 5.7 MB, Ryzen 3 CPU. It was first posted on 19 Mar 2026 and is available in 1 Telegram channel.

Write it with an SPI programmer such as CH341A, RT809H or XGecu T48 to revive a board after a failed BIOS update, fix a corrupted Intel ME region or remove a forgotten BIOS password. Read and save the original chip first, and check that your board is LA-K062P.

MSGFrom the Telegram post

Z INFO SERVICE LENOVO ThinkBook 15 G3 ACL Laptop - Type 21A4 GLV3B LA-K062P REV 3.0 2021-01-11 AMD RYZEN 3 UNLOCKED TESTED OK DONE BIOS 100% TESTED & VERIFIED BIOS Fully Working Stable Reliable Official Website

J1Download LA-K062P BIOS / EC firmware from Telegram

R1How to download Z INFO SERVICE LENOVO ThinkBook 15 G3 ACL Laptop Type 21A4 GLV3B

1. Press Download in Telegram. The post opens in the Telegram app, or on a t.me preview page — choose “View in Telegram”.
2. You don’t need to join the channel. Tap the file Z_INFO_SERVICE_LENOVO_ThinkBook_15_G3_ACL_Laptop_Type_21A4_GLV3B.RAR to download it.
3. Open it with 7-Zip (free) or WinRAR.

If a post was deleted, try another source above or search for LA-K062P. Step-by-step help: downloading from Telegram.

Back up the original chip twice before writing this dump, and check that the board number and chip size match. See how to flash a BIOS chip.

.RARWhat is a .rar file and how to open it?