Locating SIMATIC IoT2000 Example Image V2.1.3 and Updating NodeJS

The SIMATIC IoT2000 family comprises the IoT2020, IoT2040, and IoT2050 gateways. Engineers who built long-running field installations on the legacy Example Image V2.1.3 frequently hit three walls simultaneously: the image is no longer published on the Siemens download portal, NodeJS upgrades above v6 fail silently on the Quark SoC inside the IoT2040, and the Siemens meta-iot2000 GitHub releases page marks V3.1.17 as the final offical Example Image. This reference documents the recovery procedure, the exact compatibility boundaries for the NodeJS runtime, the Yocto BSP path for a custom image, and the field-proven migration steps toward the SIMATIC IOT2050 successor.

1. Hardware Distinction: Quark vs Apollo Lake

Selecting the right image begins with the silicon. The IoT2000 series is split into two incompatible hardware generations, and each ships a different Yocto BSP layer in meta-iot2000.

The lack of SSE on the Quark is the root cause of every NodeJS upgrade failure on the IoT2020/IoT2040. The upstream NodeJS project dropped x86 builds without SSE2 in 2017. Native modules that depend on V8's TurboFan, Crankshaft, or any crypto primitive that uses SSE-accelerated routines will SIGILL immediately on Quark.

2. Example Image Release History

The Siemens Example Image is a pre-built SD card / eMMC image containing a Poky / Yocto userspace, the iot2000setup tool, Eclipse Mosquitto, Node-RED, the libmraa / libupm I/O bindings, and a default NodeJS v6 runtime. Every release is tagged in the meta-iot2000 releases page.

The official meta-iot2000 release index confirms that V3.1.17 is the last tag Siemens ships. The repository has been archived; the maintainers explicitly direct new work to the IOT2050 hardware platform and the Dunfell-based BSP.

3. Why V2.1.3 Is Sought After

Engineers returning to long-running IoT2040 installations frequently report that V2.1.3 was the last image that combined three field-useful behaviors:

1. Pre-installed n package. V2.1.3 shipped with the n NodeJS version manager and an unmodified npm cache. n 10.13.0 in-place upgrades succeeded for many users, even though the binaries that landed were V8 builds later patched downstream.
2. Pyro kernel + userspace with a relaxed opkg.conf that allowed third-party feeds.
3. Working libmraa / libupm bindings for the on-board Arduino shield header, which later releases restricted through signature verification.

The trade-off is real: V2.1.3 has unpatched CVEs in openssl, busybox, and the kernel. It must not be exposed to an untrusted network. Treat any V2.1.3 deployment as air-gapped or behind a stateful firewall.

4. NodeJS Compatibility Matrix on the IoT2000 Family

Use the table below to select a runtime for a specific hardware revision. Crossing the dashed boundary produces SIGILL or V8 aborts on the Quark.

Field observations: any NodeJS binary on Quark that appears to start will crash the moment V8 hits an SSE2 opcode. This includes any npm install that pulls a native module like bcrypt, sodium-native, or node-sqlite3 built against V8 > 6.x. The fault is not in the package, it is in the V8 codegen.

5. Locating the Legacy Example Image V2.1.3

Siemens has not republished V2.1.3 on its public download center. The supported channels, in order of preference:

1. Siemens Industry Online Support (SIOS) ticket. Open a support request with the device serial number and ask for the V2.1.3 SD card image under your existing service contract. Siemens support will typically deliver an .iso or .wic image through the SIOS secure file exchange.
2. Siemens Expert / partner channel. Industrial distributors with a System Integrator agreement can pull archived images from the partner portal.
3. Internal asset backup. Always archive the SHA-256 of any V2.1.3 image you obtain and store it in your CMDB. Once you have a verified copy, the iot2000setup tool can re-image an SD card from the local repository in under 12 minutes for a 4 GB card.

Do not pull V2.1.3 from third-party mirrors or torrent trackers. The image has no signed manifest, so the integrity chain is entirely trust-based. A tampered image gives an attacker the highest privilege on a device that often sits in front of PLCs.

5.1 Verifying the Image

Once you have a candidate V2.1.3 image, validate it before flashing:

1. Compute sha256simage-IoT2040-V2.1.3.wic and compare to the value archived in your CMDB or supplied by Siemens support.
2. Mount the boot partition (losetup -P) and confirm the kernel banner reads 4.4.76-yocto-standard and the initramfs references the Pyro release tag.
3. Inspect /etc/os-release on the running device. V2.1.3 reports VERSION_ID="2.1.3" and VERSION="2.1.3 (pyro)".
4. Check that npm --version resolves to 3.10.10 and node --version resolves to v6.12.3. Any deviation indicates the image has been modified.

6. Upgrading NodeJS on the IoT2040

Two upgrade paths are documented for the Quark hardware. Pick the one that matches your operational constraints.

6.1 Path A: In-place via n (V2.1.3 only)

This is the path that historically worked for some teams on V2.1.3 - V2.1.5. It is fragile and the success window has narrowed as npm-side dependencies began shipping SSE-using code.

# SSH to the IoT2040, then:
opkg update
opkg install ca-certificates wget

# Confirm the default runtime
node --version   # v6.12.3 on V2.1.3

# Use n to fetch a build, n will compile or fetch a prebuilt
npm install -g n
n 8.17.0          # last LTS that compiles on Quark without SSE
hash -r
node --version   # v8.17.0

# Pin the runtime so a reboot does not revert
ln -sf /usr/local/n/versions/node/8.17.0/bin/node /usr/bin/node
ln -sf /usr/local/n/versions/node/8.17.0/bin/npm /usr/bin/npm

6.2 Path B: Custom Yocto image with NodeJS v8

For a reproducible build, use the meta-iot2000 jan/thud branch. The procedure below produces a .wic image with NodeJS v8 LTS baked in.

1. Install the Yocto prerequisites on a Linux build host (Ubuntu 18.04 or 20.04 recommended, 100 GB free disk, 16 GB RAM minimum).

   sudo apt-get install gawk wget git-core diffstat unzip texinfo \
     gcc-multilib build-essential chrpath socat cpio python3 python3-pip \
     python3-pexpect xz-utils debianutils iputils-ping python3-git \
     python3-jinja2 libegl1-mesa libsdl1.2-dev pylint3 xterm

2. Clone the BSP layers for the thud release.

   mkdir iot2000-thud && cd iot2000-thud
   git clone -b thud https://github.com/siemens/meta-iot2000.git
   git clone -b thud https://git.yoctoproject.org/git/poky
   git clone -b thud https://github.com/meta-qt5/meta-qt5.git
   source poky/oe-init-build-env build

3. Add the layers in conf/bblayers.conf:

   BBLAYERS ?= " \
     ${TOPDIR}/../poky/meta \
     ${TOPDIR}/../poky/meta-poky \
     ${TOPDIR}/../poky/meta-openembedded/meta-oe \
     ${TOPDIR}/../poky/meta-openembedded/meta-python \
     ${TOPDIR}/../meta-qt5 \
     ${TOPDIR}/../meta-iot2000 \
     "

4. Set the machine in conf/local.conf:

   MACHINE = "iot2040"   # or iot2020 for the dual-Ethernet variant
   DISTRO_FEATURES_append = " wayland opengl"
   

5. Force NodeJS v8 in the image recipe. Add to conf/local.conf:

   PREFERRED_VERSION_nodejs = "8.17.0"
   PREFERRED_VERSION_nodejs-native = "8.17.0"
   

6. Build the image. Expect 4-8 hours on a workstation with 8 cores, longer on a VM.

   bitbake iot2000-example-image

7. The resulting image is at tmp-glibc/deploy/images/iot2040/iot2000-example-image-iot2040.wic. Flash to SD card with bmaptool or dd.

7. Installing PostgreSQL or MongoDB on the IoT2040

Both databases are technically installable on the Quark-based IoT2040, but in practice both hit hard limits. Use the following decision matrix.

7.1 Procedure for PostgreSQL on the 1 GB IoT2040

1. Add the recipe to your local Yocto image or use the opkg feed:

   opkg update
   opkg install postgresql

2. Initialize the cluster on a USB-attached SSD, never on the eMMC (wear):

   mkdir -p /media/sda1/pgdata
   chown -R postgres:postgres /media/sda1/pgdata
   su - postgres -c "/usr/lib/postgresql/9.6/bin/initdb -D /media/sda1/pgdata"

3. Tune postgresql.conf for 256 MB shared_buffers and disable the JIT (LLVM JIT is not available on Quark):

   shared_buffers = 256MB
   effective_cache_size = 512MB
   jit = off
   max_connections = 20

4. Start the server and verify:

   /etc/init.d/postgresql start
   psql -U postgres -c "SELECT version();"

7.2 Procedure for MongoDB on the 1 GB IoT2040

MongoDB 3.6 is the last version that builds without SSE4.2 requirements. The procedure mirrors PostgreSQL, with two extra steps:

1. Build or install mongodb-server-core and mongodb-clients 3.6.x.
2. Configure WiredTiger with a strict cache ceiling:

   storage:
     engine: wiredTiger
     wiredTiger:
       engineConfig:
         cacheSizeGB: 0.3
   

3. Start with systemLog.verbosity: 1 only; every log level above 1 doubles memory pressure on Quark.

Operationally, if your application truly needs MongoDB features (TTL indexes, aggregation pipelines, change streams), the right answer is to push the database to a separate industrial server or migrate to the IOT2050.

8. Migration Path to SIMATIC IOT2050

The meta-iot2000 releases page states that the IOT2050 is the successor platform and that the IoT2040 has reached product discontinuation. The migration is mechanical, not architectural.

1. Reflash the IOT2050 with Example Image V3.1.17 (the last official image) using iot2000setup from a USB stick or the SD card slot on the IOT2050.
2. Re-target the BSP. Change MACHINE = "iot2040" to MACHINE = "iot2050" in your custom layer's local.conf. The Apollo Lake BSP is layered on Dunfell and uses linux-intel 5.10.
3. Update the NodeJS runtime. V3.1.17 ships with NodeJS v12 LTS. If your application code targets v8, run it under v12 directly; the NodeJS compatibility layer is stable for typical OPC-UA, Modbus, and MQTT workloads.
4. Re-validate the I/O bindings. The Arduino shield header pinout is identical between IoT2040 and IOT2050, but the libmraa major version moved from 1.x to 2.x. Re-test any custom C/C++ modules.
5. Re-issue the security posture. The IOT2050 supports Secure Boot and a TPM 2.0. Enable both, regenerate SSH host keys, and re-sign your application containers.

9. Field-Proven Caveats and Verification

Use the checklist below before declaring any IoT2000 deployment production-ready.

1. Verify the boot partition signature. V2.1.3 images do not ship signed kernels. Once migrated to V3.1.17 on the IOT2050, enable UEFI Secure Boot and confirm with mokutil --sb-state returning SecureBoot enabled.
2. Monitor node process RSS. On Quark, a NodeJS v8 runtime with three active MQTT connections typically holds 90-130 MB resident. The kernel will OOM-kill at ~180 MB. Set a systemd memory limit of 150 MB and a restart policy.
3. Avoid npm install on the device. Compile native modules on the Yocto build host with npm install --target_arch=ia32 and ship the node_modules tree as part of the application artifact. npm install on Quark is a frequent cause of flash wear and silent SSE faults.
4. Watch the eMMC wear. cat /sys/block/mmcblk0/device/life_time returns a value of 0x00 to 0x0A. Anything above 0x07 means the eMMC is near end-of-life. Move write-intensive workloads (logs, databases) to the SD card or USB SSD.
5. Network segmentation. Place the IoT2000 behind a stateful firewall. The V2.x images have unpatched CVEs in busybox (CVE-2021-42374 and related) and in the bundled dropbear SSH server.
6. Time synchronisation. The default systemd-timesyncd is sufficient, but if you run OPC-UA, switch to chrony and configure NTP over the management VLAN.

10. Troubleshooting Matrix

11. Summary of Constraints

• The meta-iot2000 releases page marks V3.1.17 as the last offical Example Image and the IoT2040 as a discontinued product line.
• V2.1.3 is not republished; recover it from Siemens support, a partner portal, or an internal archive, then checksum the image.
• NodeJS on the Quark-based IoT2020 / IoT2040 is practically limited to v6 LTS, with v8 LTS possible only via a custom Yocto thud build on the meta-iot2000 jan/thud branch.
• PostgreSQL works on the 1 GB IoT2040 SKU for archival logging only; MongoDB is feasible in version 3.6.x with strict cache ceilings, but is not recommended for new designs.
• New industrial deployments should target the SIMATIC IOT2050 with Example Image V3.1.17.

12. Frequently Asked Questions