BIOS

HP ProBook 455 G2 ZPL4555 LA-B191p Rev 1.0.rar

BIOS / EC firmware for HP ZPL4555 · board LA-B191P · 2.5 MB · shared in 5 Telegram posts.

TXTAbout HP ProBook 455 G2 ZPL4555 LA-B191P Rev 1.0 BIOS / EC firmware

HP ProBook 455 G2 ZPL4555 LA-B191P Rev 1.0 is an HP ZPL4555 BIOS / EC firmware dump for board LA-B191P. It is packed in a RAR archive of 2.5 MB, board revision 1.0. It was first posted on 7 Jun 2021 and is available in 5 Telegram channels.

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-B191P revision 1.0.

For the same board you can also find a schematic — see all LA-B191P files.

Type
BIOS & EC
Format
.rar · RAR archive
Size
2.5 MB
Brand
HP
Board number
LA-B191P
Model
ZPL4555
Revision
1.0
First posted
7 Jun 2021
Last posted
13 Jul 2025
Sources
5

Tags

J1Download LA-B191P BIOS / EC firmware from Telegram

R1How to download HP ProBook 455 G2 ZPL4555 LA-B191P Rev 1.0

  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 HP ProBook 455 G2 ZPL4555 LA-B191p Rev 1.0.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-B191P. 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?

RAR archive. A compressed folder. It can hold a schematic, a boardview, a BIOS dump or all three.

Open with:

  • 7-Zip (free)
  • WinRAR

Tip: If the archive asks for a password, look for it in the Telegram post text.