Acer K2 Lifecycle Extension Guide - Page 16

Setp up1: Choose Access method as RealtekUSB

Page 16 highlights

ACER-K242HYLH 16 Note that the monitor needs to be powered on before upgrading;; Setp up1: Choose Access method as RealtekUSB Step up2: Confirm that the USB upgrade board is connected to OK; Setp up3: Double-click to select the ISP column; Step up4: Check the first line 0 and place the box; Step up5: Click to select and import the bin file path of the software to be upgraded; Setp up6: Click to start; Start the upgrade process Upgrade OK prompt

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Note that the monitor needs to be powered on before upgrading;
Setp up1: Choose Access method as RealtekUSB
Step up2: Confirm that the USB upgrade board is connected to OK
Setp up3: Double-click to select the ISP column
Step up4: Check the first line 0 and place the box
Step up5: Click to select and import the bin file path of the
software to be upgraded;
Setp up6: Click to start;
Start the upgrade process
Upgrade OK prompt
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ACER-K242HYLH