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Updates: a download that breaks is carried on
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When the connection breaks during a release download (issue #54), the
device waits up to a minute for Wi-Fi, asks for the rest of the file
with a Range request and carries on: the slot and the hash so far are
kept. It gives up after three tries in a row that bring nothing.
Nothing is kept across a restart.

Carrying on asks for 64 KB free, not 80: between two connections of an
install 78 KB is free, and the first attempt on the device was refused
for that. update damage cut now breaks every connection after n bytes.

Tried on the device: v0.23.0 installed over four connections, and a
download that brought nothing given up with nothing switched.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0162FokPdvY2KsS4NBfwyWPk
This commit is contained in:
twisla
2026-10-11 18:26:39 +02:00
co-authored by Claude Opus 5.5
parent 468dc0dc0d
commit 472f13260f
12 changed files with 155 additions and 21 deletions
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@@ -19,6 +19,8 @@ The page shows the **version** running, its **status**, the address to **push up
An install needs Wi-Fi if it is a download. The new firmware is checked before anything is written (the signature after the first 160 bytes) and again at the end (the image's hash). Then the device restarts. It will **wait up to 60 seconds** if you are typing, so that a restart never eats a note.
A download that **breaks** (the Wi-Fi drops, the link is poor) is not started over: the device waits up to a minute for Wi-Fi to come back, asks the server for the rest of the file, and carries on from where it was, as often as it takes while each try brings something more. It gives up after three tries in a row that bring nothing, and then nothing is changed. If the device is switched off in between, the download starts from the beginning next time.
## Check for updates
**Settings → System → Check for updates** is on by default. Once a day, with Wi-Fi up and the clock set, the device looks at the latest release and says `v0.11.0 is out: see Settings > System > Firmware`, once per version. It installs **nothing** by itself unless you ask for that (below), and it does not announce a version that already failed and rolled back on this device.