1. Scope
This Privacy Policy applies to the Solo Satoshi Web Flasher at flash.solosatoshi.com, operated by Solo Satoshi LLC, a Delaware limited liability company. It covers the flasher interface, verified firmware manifest and downloads, browser-based USB flashing, local custom-file tools, and issue-reporting feature. Where applicable privacy law uses the term “controller,” Solo Satoshi is the controller of personal information for which it determines the purposes and means of processing.
The Solo Satoshi online store, customer accounts, purchases, support requests submitted outside this flasher, and marketing services are governed by the separate Solo Satoshi store Privacy Policy.
2. Plain-language summary
- There is no flasher account or login.
- The flasher does not set advertising or analytics cookies.
- Cookieless Matomo analytics measure visits, button clicks, public option selections, and flashing and support outcomes. Browser Do Not Track and Global Privacy Control are respected.
- The flasher stores only your language preference in localStorage. It does not use sessionStorage.
- Firmware is downloaded to your browser and written to the miner you select.
- USB communication stays between your browser and that locally connected device.
- If you submit an issue report, your reply email and description are sent to Solo Satoshi support and used only to investigate and respond to that report, not for marketing.
- Hosting and delivery providers process ordinary network information needed to deliver, measure, and protect the service.
3. Information processed when you visit
Like other internet services, the infrastructure that delivers the flasher receives technical request information. This can include your IP address, date and time of a request, requested file or URL, browser and device characteristics, operating system, referring page, approximate region derived from an IP address, and security or error information.
The flasher page is hosted using GitHub Pages. GitHub states that it logs the IP address of visitors to GitHub Pages for security purposes. Firmware manifests and firmware files are delivered through Cloudflare infrastructure. Cloudflare may process IP addresses, traffic-routing data, system configuration information, and other request metadata as described in its privacy policy.
If you choose Report an issue, the form sends the reply email and description you enter to Solo Satoshi support. The reply email is used only by the Solo Satoshi support team to communicate with you about that report; it is not added to a marketing list or a separate flasher contact database. Cloudflare processes the submission and ordinary network metadata, including the IP address used for rate limiting and browser, device, and interaction signals used by Turnstile to distinguish people from automated abuse. Proton Mail delivers and stores the resulting support email, including the reply email, as support correspondence. Do not include passwords, Wi-Fi credentials, private keys, seed phrases, or other sensitive information in your description.
Solo Satoshi does not use this flasher to create advertising profiles or track visitors across unrelated websites.
4. USB and miner data
The flasher uses the browser's Web Serial interface. Your browser displays a device chooser, and the flasher can communicate only with a serial device you expressly select. Browser and operating-system controls govern that permission.
The local connection is used to identify the compatible ESP chip, place or continue the device in its flashing mode, write the selected firmware, report local progress, and restart the device. Technical messages shown in the on-screen log remain in the current browser page memory and disappear when the page is closed or reloaded. The application does not send those messages to Solo Satoshi.
When you choose to preserve miner settings, the flasher skips the device's settings partition while writing the firmware. It does not read, copy, store, or transmit the Wi-Fi, pool, or other configuration data in that partition.
When you choose a custom ESP firmware file, the application reads the file only into browser memory, checks its structure and calculates its SHA-256 digest locally, and writes it directly to the device you selected. The custom file is not uploaded to Solo Satoshi or its hosting providers.
6. Service providers and outside links
We use service providers to operate, measure, and secure the flasher:
- GitHub: source-code hosting, automated builds, and GitHub Pages hosting. Review the GitHub Privacy Statement.
- Cloudflare: firmware-file storage and delivery, DNS, network security, issue-report delivery, rate limiting, and Turnstile bot verification. Review the Cloudflare Privacy Policy.
- Matomo Cloud: cookieless usage measurement described above. Review the Matomo Cloud Privacy Policy.
- Proton: delivery and storage of issue reports in the Solo Satoshi support mailbox. Review the Proton Privacy Policy.
The flasher also links to upstream open-source release pages on GitHub and to solosatoshi.com. Those destinations control their own data practices once you leave the flasher.
7. How technical information is used
Technical request information may be processed to deliver requested files and improve reliability, diagnose failures, respond to submitted issue reports, prevent abuse, protect the service and its users, comply with legal obligations, and establish or defend legal claims. Where applicable law requires a legal basis, these activities are based on providing the service you requested, our legitimate interests in operating and securing it, and compliance with law.
Information may be disclosed when reasonably necessary to comply with law or valid legal process, protect rights or safety, investigate abuse or security incidents, or complete a merger, financing, reorganization, sale of assets, or similar business transaction subject to appropriate safeguards.
Solo Satoshi does not sell personal information collected through the flasher and does not share it for cross-context behavioral advertising.
8. Retention and international processing
The flasher application itself does not maintain a user database, store the issue-report email in browser storage, or retain USB-session information. GitHub, Cloudflare, and Matomo may retain infrastructure and security records according to their own policies, our account settings, contracts, and legal obligations. Those providers may process information in the United States and other countries where they operate.
Issue-report reply emails and descriptions are retained together in the Solo Satoshi support mailbox as reasonably necessary to investigate and resolve the reported problem, maintain security and support records, and meet legal obligations. The reply email is not copied into a separate flasher contact database. Cloudflare and Proton may retain related records according to their own policies, contracts, and legal obligations.
If you contact Solo Satoshi through the main website, information in that request is retained under the Solo Satoshi store Privacy Policy and applicable recordkeeping requirements.
9. Your privacy rights
Depending on where you live, you may have rights to request access to, correction of, deletion of, or a copy of personal information, or to object to or restrict certain processing. You may also have a right to appeal a decision or complain to a privacy regulator.
For United States state-privacy-law purposes, the categories potentially processed through ordinary web requests are identifiers, such as an IP address, and internet or other electronic network activity, such as request, browser, and device information. These categories come directly from your browser or network and are used for the operational and security purposes described above. The flasher does not knowingly process sensitive personal information, sell personal information, or share personal information for targeted or cross-context behavioral advertising.
Because the flasher does not maintain user accounts or an application-level user database, Solo Satoshi may have little or no information that can be linked to you. We may need enough information to verify and respond to a request. Service providers handle requests concerning information they control under their own privacy procedures. We will not discriminate against you for exercising an applicable privacy right.
10. Security
For verified releases, we use measures intended to reduce risk, including HTTPS, restrictive browser security policies, approved firmware sources, file-size checks, and SHA-256 verification. Custom firmware does not receive release-authenticity or hardware-compatibility verification; only basic file-structure checks and a local SHA-256 calculation are performed. No internet service, browser API, storage system, or software process can be guaranteed completely secure.
Never provide Solo Satoshi with private keys, seed phrases, recovery phrases, wallet credentials, or mining-pool passwords. We do not need them to operate or support this flasher.
11. Children
The flasher is intended for users who can understand the technical and legal consequences of changing device firmware. It is not directed to children under 13, and Solo Satoshi does not knowingly collect personal information from children through the flasher.
12. Changes to this policy
We may update this policy to reflect changes in the flasher, service providers, or applicable law. We will post the revised policy here and change the last-updated date. Material changes apply prospectively from the stated effective date.
13. Contact
Questions and privacy requests may be submitted through the Solo Satoshi contact page or mailed to:
Solo Satoshi LLC
1022 Outpost Drive, Ste A4
Conroe, TX 77304
United States