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Kaj SchittecatandClaude Opus 4.8
7a034d303a
Three real bugs behind the endless 'Download failed', found by putting a diagnostic on the device instead of guessing: 1. HTTP read quit early. The loop treated a gap in the stream as end-of-data, so a 49 KB file came back as 16 KB (n=16492 measured) and, worse, that truncated buffer was returned as success. It now reads to Content-Length, gives stalls a 4 s progress grace, and FAILS on a short read instead of handing back half a file. 2. SD writes from PSRAM died after the first 4 KB (wr=4096, measured twice). Writes now go through a small internal-RAM bounce buffer, which is what every proven-good SD writer in this firmware already does. Full 49344 bytes written and installed, confirmed on the bench. 3. A truncated write still stamped the new '# ver:' (it is the file's FIRST line) while the appended rows were lost — so the tab claimed v4, offered no Update, and showed English. Downloads are atomic now: temp file, verify on-card size, then rename over the target. A failure leaves the old file and its old version untouched. Plus: if a /lang write fails, an identical control write to /apps proves whether the card is healthy, and if so /lang is rebuilt and the install retried — self-healing the FAT damage that mid-write resets can leave. Language changes now show 'Restarting to apply the language...' and reboot on a timer, so the notice actually paints. showAlert() followed immediately by rebootDevice() never rendered a frame — the device just went dark under your finger. Applies to Update, Use, and the built-in picker alike. The boot self-heal no longer toasts its failures (that was the 'download failed' that greeted you when merely opening the store). Files at ver 5. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>