firmware-update-patterns SKILL.md skillA
firmware-update-patterns from hermeticormus/libreembed-claude-code is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hermeticormus/libreembed-claude-code/firmware-update-patterns@git:20260930.dffc082Pins git:20260930.dffc082 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hermeticormus/libreembed-claude-code
- Path
plugins/firmware-update/skills/firmware-update-patterns/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260930.ba05790, committed Sep 30, 2026
- First version recorded
- Feb 25, 2026
- Size
- 5,853 bytes
- Repository stars
- 51
- License
- MIT
FOTA patterns for MCU firmware updates with reliability guarantees.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# firmware-update-patterns
## Knowledge Base
FOTA patterns for MCU firmware updates with reliability guarantees.
---
## Pattern 1: mcuboot Image Header Construction
```c
/* Build tool (Python/imgtool) writes this header before the firmware binary */
/* MCU application starts at header_base + header_size (default 0x20 = 32 bytes) */
#define MCUBOOT_MAGIC 0x96f3b83dUL
typedef struct __attribute__((packed)) {
uint32_t magic; /* 0x96f3b83d */
uint32_t load_addr; /* 0: XIP from flash */
uint16_t hdr_size; /* 32 bytes */
uint16_t protect_tlv; /* 0 */
uint32_t img_size; /* Firmware body bytes */
uint32_t flags; /* IMAGE_F_* flags */
uint8_t img_ver[8]; /* major, minor, revision[2], build_num[4] */
uint32_t _pad;
} mcuboot_header_t; /* Exactly 32 bytes */
/* Verify on bootloader side: */
bool mcuboot_verify_header(const void *slot_base)
{
const mcuboot_header_t *hdr = slot_base;
return hdr->magic == MCUBOOT_MAGIC
&& hdr->hdr_size == 32U
&& hdr->img_size > 0U
&& hdr->img_size < MAX_IMAGE_SIZE;
}
```
---
## Pattern 2: FOTA Progress Tracking via MQTT
```python
…Read the whole file at its exact version.
How to install
mdr add hermeticormus/libreembed-claude-code/firmware-update-patterns@sha256:2cce6536b8692541The line at the top of this page pins the label git:20260930.dffc082, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_neeeigoe3625hl2c)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Feb 25, 2026 and Sep 30, 2026, about one every 73 days. Its first recorded version is graded C and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260930.ba05790 latest | 2026-09-30 | ba05790 | 5,853 B | A | view · diff |
| git:20260930.dffc082 | 2026-09-30 | dffc082 | 5,705 B | A | view · diff |
| git:20260226.186740f | 2026-02-26 | 186740f | 5,580 B | C | view · diff |
| git:20260225.a4aeb64 | 2026-02-25 | a4aeb64 | 2,989 B | C | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5853 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
hermeticormus/libreembed-claude-code · 51 stars · license MIT · pushed 2026-10-09 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_neeeigoe3625hl2c GET https://markdownregistry.com/api/v1/resolve?ref=hermeticormus/libreembed-claude-code/firmware-update-patterns GET https://markdownregistry.com/api/v1/blob/2cce6536b86925416bcb643c5b273ac576342a724fafef7a786f8de899b9fcbc
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.