So I download the file on my PC, use Acer Update Decrypt (you can find this tool on xda-developer) to decrypt the downloaded file, then extract it to get the update.zip file. I copied update.zip to a MicroSD card, turned off A500, plugged the SD card in and turned on (with the Volumn Down button is pressed).

Acer is aware of the Intel ME/TXE Elevation of privileges vulnerability, and we are diligently working to provide updates for all impacted models. Intel has recently conducted a comprehensive security review that has identified a vulnerability that could allow an attacker to gain unauthorized access to platform features that are protected by Intel Management Engine (ME), Intel Server Platform Services (SPS), or Intel Trusted Execution Engine (TXE). Due to potential platform key exposure and third party services dependency on those keys, existing platform keys will be revoked. As a result, some third parties may require that those platform keys be re-issued to avoid interruptions in their service.

Windows 10 Drivers for PCI Encryption/Decryption Controller Running a Lenovo B50-45 and I have resolved all driver issues except PCI Encryption/Decryption Controller. I did on my Lenovo by installing Intel Trusted Execution Engine driver (Install Intel TXE_Win7_8_8.1_1.1.0.1089). Acer site says to run Windows Update but I've.
So I download the file on my PC, use Acer Update Decrypt (you can find this tool on xda-developer). Acer a500 update error, acer a500 update problem.

The security and privacy of customers' information are priorities for Acer. Acer is working closely with Intel to address the situation and are working to release firmware updates to fix the security vulnerability. Please see below for further details.

Impact Scope:

Systems using ME Firmware versions 11.0/11.5/11.6/11.7/11.10/11.20, SPS Firmware version 4.0, and TXE version 3.0 are impacted. These firmware versions may be found on certain 6th, 7th, & 8th Generation Intel® Core™ Processor Family, Intel® Xeon® Processor E3-1200 v5 & v6 Product Family,Intel® Xeon® Processor Scalable Family, Intel® Xeon® Processor W Family, Intel® Atom® C3000 Processor Family, Apollo Lake Intel® Atom Processor E3900 series,Apollo Lake Intel® Pentium™ and Celeron™ N and J series Processors.

For additional information, please visit the Intel Security Center.

Resolution:

Step 1: Check below to see if your system has been impacted.
Step 2: Download and install the latest firmware update.

Dvd Shrink Update Decrypter

Affected Acer Models

+ Notebook
Model Name	ME FW Version	ME Driver Version	BIOS Version
A20-10	11.8.50.3425	11.7.0.1045	N/A
Aspire A114-31	N/A	11.7.0.1045	1.09
Aspire A314-31	N/A	11.7.0.1045	1.09
Aspire A315-31	N/A	11.7.0.1045	1.09
Aspire A315-51	11.8.50.3399	11.7.0.1045	N/A
Aspire A315-52	11.8.50.3399	11.7.0.1045	N/A
Aspire A515-51	11.8.50.3425	11.7.0.1045	N/A
Aspire A515-51G	11.8.50.3425	11.7.0.1045	N/A
Aspire A517-51	11.8.50.3425	11.7.0.1045	N/A
Aspire A517-51G	11.8.50.3425	11.7.0.1045	N/A
Aspire A715-71G	11.8.50.3425	11.7.0.1045	N/A
Aspire A717-71G	11.8.50.3425	11.7.0.1045	N/A
Aspire E5-474	11.8.50.3425	11.7.0.1045	N/A
Aspire E5-474G	11.8.50.3425	11.7.0.1045	N/A
Aspire E5-475	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-475G	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-476	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-476G	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-491G	11.8.50.3425	11.7.0.1045	N/A
Aspire E5-574	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-574G	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-574T	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-574TG	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-575	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-575G	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-575T	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-575TG	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-576	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-773	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-773G	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-774	11.8.50.3399	11.7.0.1045	N/A
Aspire E5-774G	11.8.50.3399	11.7.0.1045	N/A
Aspire ES1-132	N/A	11.7.0.1045	1.16
Aspire ES1-332	N/A	11.7.0.1045	1.16
Aspire ES1-432	N/A	11.7.0.1045	1.15
Aspire ES1-433	11.8.50.3425	11.7.0.1045	N/A
Aspire ES1-433G	11.8.50.3425	11.7.0.1045	N/A
Aspire ES1-533	N/A	3.1.50.2222	1.14
Aspire ES1-572	11.8.50.3425	11.7.0.1045	N/A
Aspire ES1-732	N/A	3.1.50.2222	1.14
Aspire F5-572	11.8.50.3425	11.7.0.1045	N/A
Aspire F5-572G	11.8.50.3399	11.7.0.1045	N/A
Aspire F5-573	11.8.50.3399	11.7.0.1045	N/A
Aspire F5-573G	11.8.50.3399	11.7.0.1045	N/A
Aspire F5-573T	11.8.50.3399	11.7.0.1045	N/A
Aspire F5-771	11.8.50.3399	11.7.0.1045	N/A
Aspire F5-771G	11.8.50.3399	11.7.0.1045	N/A
Aspire K4000	11.8.50.3425	11.7.0.1045	N/A
Aspire K40-10	11.8.50.3399	11.7.0.1045	N/A
Aspire K50-20	11.8.50.3399	11.7.0.1045	N/A
Aspire K50-30	11.8.50.3425	11.7.0.1045	N/A
Aspire R5-371T	11.8.50.3399	11.7.0.1045	N/A
Aspire R5-471T	11.8.50.3425	11.7.0.1045	N/A
Aspire R5-571T	11.8.50.3425	11.7.0.1045	N/A
Aspire R5-571TG	11.8.50.3425	11.7.0.1045	N/A
Aspire S5-371	11.8.50.3425	11.7.0.1045	N/A
Aspire S5-371T	11.8.50.3425	11.7.0.1045	N/A
Aspire T5000	11.8.50.3399	11.7.0.1045	N/A
Aspire T6000	11.8.50.3425	11.7.0.1045	N/A
Aspire V3-372	11.8.50.3399	11.7.0.1045	N/A
Aspire V3-372T	11.8.50.3399	11.7.0.1045	N/A
Aspire V3-575	11.8.50.3399	11.7.0.1045	N/A
Aspire V3-575G	11.8.50.3399	11.7.0.1045	N/A
Aspire V3-575T	11.8.50.3399	11.7.0.1045	N/A
Aspire V3-575TG	11.8.50.3399	11.7.0.1045	N/A
Aspire V5-591G	11.8.50.3399	11.7.0.1045	N/A
Aspire VN7-572	11.8.50.3399	11.7.0.1045	N/A
Aspire VN7-572G	11.8.50.3399	11.7.0.1045	N/A
Aspire VN7-572TG	11.8.50.3399	11.7.0.1045	N/A
Aspire VN7-592G	11.8.50.3399	11.7.0.1045

Acer Update Decrypter Execution