> For the complete documentation index, see [llms.txt](https://developer.magtek.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.magtek.com/hardware/~/revisions/aurjDoOhAcnQLHeoR1ks/card-readers/mms-dyna-devices/emv-common-kernel/dynaflex-ii-go/documents/developers-manuals/programmers-manual-commands/commands/file-operations/about-files.md). # About Files Large blobs of data uploaded to / downloaded from the device are referred to as “files” and share a common set of commands documented here, and special message type **Data File Message**. Some file types can be sent in the File Payload fields in “raw” form (e.g. certificates and images) with metadata coming from the command request and response. Other file types require the addition of MagTek metadata included inside the File Payload blob; these are documented in the “File Type” subsections of section: **Data Types and Shared TLV Data Objects**. Files Types that may come from the host include: * EMV configuration * Firmware updates * Public Key Infrastructure (PKI) Certificates * User interface images and prompts * EMV kernels * SRED BIN tables File Types that may come from the device include: * Read back of the above file types * Signature Capture * Logs * Certificate Requests The commands in this section share a common list of 4-byte file types, listed in the table below. File types marked as Secured = Yes must be loaded using **Command 0xD811 - Start Send File to Device (Secured)**; file types that are marked as Secured = No can be loaded using **Command 0xD812 - Start Send File to Device (Unsecured)**. ## Table - File Types
DescriptionSecuredFile TypeFile Type VersionFile SubtypeFile Instance
EMV configuration, terminal file. See file definition in section 4.8 Get: No Set: No0x000x000x000x00
EMV configuration, processing file. See file definition in section 4.9 Get: No Set: No0x000x000x010x00
EMV configuration, entry point file. See file definition in section 4.10Get: No Set: No0x000x000x020x00
EMV configuration, CA keys file. See file definition in section 4.10.6 Get: No Set: No0x000x000x030x00
EMV configuration, Visa DRL set. Reserved for future use.Get: No Set: No0x000x000x040x00
EMV configuration, American Express DRL set. See file definition in section 4.12 Get: No Set: No0x000x000x050x00
EMV configuration, MasterCard update conditions. Reserved for future use.Get: No Set: No0x000x000x060x00
EMV configuration, American Express update conditions. Reserved for future use.Get: No Set: No0x000x000x080x00
EMV configuration, Discover update conditions. Reserved for future use.Get: No Set: No0x000x000x090x00
EMV configuration, CA revocation list. Reserved for future use.Get: No Set: No0x000x000x0A0x00
EMV configuration, exception file list. Reserved for future use.Get: No Set: No0x000x000x0B0x00
EMV configuration, DPAS data storage. Reserved for future use.Get: No Set: No0x000x000x0C0x00
(Touch Only) Signature capture file. See file definition in section 4.15 Get: No Set: NA0x010x000x000x00
(Display Only) Custom Idle Page Image 1. For details, see Property 1.2.3.1.1.1 Custom Idle Page Image.Get: NA Set: No0x020x000x000x00
(Display Only) Custom Idle Page Image 2. For details, see Property 1.2.3.1.1.1 Custom Idle Page Image.Get: NA Set: No0x020x000x000x01
(Display Only) Custom Idle Page Image 3. For details, see Property 1.2.3.1.1.1 Custom Idle Page Image.Get: NA Set: No0x020x000x000x02
(Display Only) Custom Idle Page Image 4. For details, see Property 1.2.3.1.1.1 Custom Idle Page Image.Get: NA Set: No0x020x000x000x03
(WLAN Only) Apollo root CA certificate See Certificate File Types.Get: No Set: Yes0x030x000x000x00
(WLAN Only) Apollo intermediate CA certificate See Certificate File Types.Get: No Set: Yes0x030x000x010x00
(WLAN Only) Apollo server certificate See Certificate File Types.Get: No Set: No0x030x000x020x00
(WLAN Only) Customer root CA certificate See Certificate File Types.Get: No Set: Yes0x030x000x030x00
(WLAN Only) Customer intermediate CA certificate See Certificate File Types.Get: No Set: Yes0x030x000x040x00
(WLAN Only) Customer server certificate See Certificate File Types.Get: No Set: No0x030x000x050x00
(WLAN Only) Commercial root CA certificate See Certificate File Types.Get: No Set: Yes0x030x000x060x00
(WLAN Only) Commercial intermediate CA certificate See Certificate File Types.Get: No Set: Yes0x030x000x070x00
(WLAN Only) Commercial server certificate See Certificate File Types.Get: No Set: No0x030x000x080x00
(WLAN Only) Apollo trust certificate See Certificate File Types.Get: No Set: No0x030x000x090x00
(WLAN Only) Customer trust certificate See Certificate File Types.Get: No Set: No0x030x000x0A0x00
(WLAN Only) Apollo client certificate See Certificate File Types.Get: No Set: No0x030x000x0B0x00
(WLAN Only) Certificate signing request (CSR) See Certificate Signing Request (CSR) File Types.Get: No Set: N/A0x040x000x000x00
(WLAN Only) WebSocket Trust configuration file, Request file from MagTek.Get: N/A Set: No0x050x000x000x00
(WLAN Only) MQTT Trust configuration file, Request file from MagTek.Get: N/A Set: No0x050x000x010x00
UI configuration file. See file definition in section 4.30 UI Configuration File Type.Get: No Set: No0x060x000x000x00
(Display Only) Magtek signed image file typeGet: N/A Set: No0x070x000x000x00
User File, users may send a file to or fetch a file from the device with this File ID. The maximum file size is 10,000 bytes.Get: No Set: No0x080x000x000x00
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