HyperCool v2.2.5

• Fixed: ZRAM keeps priority -2 when possible. The module tries swapon -p -2, checks the live value in /proc/swaps, and falls back to the kernel default; the status names the swap that already holds -2 instead of claiming it.
• Fixed: the background-app compaction check no longer overflows on large-RAM devices, and battery calibration skips an unreadable temperature instead of calculating with it.
• Fixed: GMS Doze reports off/failed when its whitelist cannot be restored, and a manual app optimization run releases its wake lock after 12 hours at most.
• Fixed: Runtime power detects input devices correctly when only one input glob matches; the RAM optimizer status no longer claims ZRAM tuning.
• Fixed: Keep Wi-Fi on counts every attempt for its limiter, but only reports a re-enable when Wi-Fi is really on.
• WebUI: Home stats use tabular monospace numbers, and the cache details describe the real measured paths and keep-list behavior.

HyperCool v2.2.4

• WebUI: every feature description rewritten in plain wording. Each card says in one line what the feature does, what it changes and what happens when the ROM does not support it. Section titles use "and" instead of "&".
• WebUI: the Home cards have real titles again ("Battery health", "Top battery use"). The repeated "Battery check" / "Check battery" wording is gone.
• WebUI: the More tab is now called Extras (layers icon).
• WebUI: the preset cards (Recommended, Max battery, Cool gaming, Kernel only, All off) have a detail button that lists exactly what the preset switches on and what it leaves alone.
• WebUI: the repeated intro line above the detail panels is removed and empty detail panels are no longer shown.
• WebUI: plain text instead of marketing wording ("Calmer", "Silence", "Lighter", "Deep", "Runtime power" are gone), minimum 13 px body text, 44 px tap targets, one status pill and one tag per row, clearer hero stats, a solid title and role-based corner radii.
• WebUI: the dialog keeps the focus inside, Escape closes it, the Android back button closes the open dialog instead of leaving the WebUI, the switch thumb is centered in the off position, keyboard rows work and the snackbar is announced.
• WebUI: a failed command is reported as an error. Battery check, Top battery use, Idle drain, Clean cache, the app-optimization status and the sensor refresh no longer show an empty result when the command fails; dumpsys batterystats gets a 25 s timeout.
• WebUI: the battery health words of dumpsys battery (GOOD, Over voltage, ...) are shown instead of an empty field.
• Fixed: the wake-lock rows of Top battery use show the app again. The id was read with the trailing colon, so every wake lock was listed as "isolated / other process".
• Fixed: Top battery use no longer mixes up work-profile apps with the apps of user 0.
• Fixed: the app cache size is measured for every user (clones, work profile), so the result, the minimum size limit and the notification are right. Hidden files are no longer lost when an interrupted cache folder is restored.
• Fixed: Location and Bluetooth off keeps a radio that could not be put back in its list and tries again at the next screen-on or boot. In airplane mode the Bluetooth entry is kept for later.
• Fixed: the app optimization (dex2oat) stops when the battery level, the free space or the temperature cannot be read, instead of running without any limit.
• Fixed: the screen-off keeper no longer counts a value it could not write, and a value it could not put back is retried later. Keep Wi-Fi on only counts as re-enabled when Wi-Fi is really on.
• Fixed: the adaptive refresh rate keeper reads the rate back (a refused write is retried), notices a disabled module within a minute instead of up to ten, and stops when the event filter dies.
• Fixed: the F2FS GC marker is kept when the device cannot be reached, so gc_urgent cannot stay at 1.
• Fixed: the RAM optimizer really restores the lmkd props (ro.lmk.*) when the switch goes off or the module is removed.
• Fixed: the deep log cleanup is only reported as applied when something was really turned off.
• Fixed: the VM tuning status says "stock" instead of "writeback 0s" (0 = keep the stock value), and GMS Doze shows Partial instead of Applied when GMS is still in the system Doze whitelist.
• Fixed: the post-fs-data marker is only accepted when it holds this boot's id, so a leftover marker no longer makes the module apply the previous boot's config.
• Fixed: the log timestamps use Android's own timezone (persist.sys.timezone) instead of the zone of the root shell.
• Fixed: Scheduler and governor tuning no longer overwrites hispeed_load and up_rate_limit while the less aggressive CPU governor owns them.
• Fixed: Fewer background jobs keeps the JobScheduler keys that took effect (Partial) instead of putting every key back and reporting Unsupported.
• Changed: the README no longer lists the removed "charge hold" feature, and the Specter credit is gone.

HyperCool v2.2.3

• Restore: standby bucket records saved as 5 (EXEMPTED) are restored as Active again. am set-standby-bucket never accepted "exempted" (only ac/wo/fr/ra/re/ne or a number, and the server rejects values below Active), so every value-5 record failed, was kept, and blocked --purge forever while the uninstall guard retried it on every boot. As Active the restore succeeds (the server simply ignores it while the app stays exempted), so the record is dropped and uninstall purge proceeds.
• Boot: when the root manager re-runs post-fs-data while the module is flashing (system already up), it now exits immediately. The re-run used to wipe boot.log, inflate the boot-try counter towards a false SAFE MODE, and consume the pending battery-calibration delete. Real boots are unaffected.

HyperCool v2.2.2

• Restore: Freeze safe GMS components records are no longer dropped as "package gone". The host package of the component is now checked, so pm enable runs and the components are re-enabled.
• Restore: apps that were in the Exempted standby bucket (5) are put back in Exempted on Android 12+ (Active on older), instead of Active.
• Standby bucket: Restricted is now used only on Android 12+ (API 31). Android 11 uses Rare, so the write no longer fails silently.
• Charge limit: uninstall and the disable guard only reset night_charging when HyperCool set it. A value set by the ROM is left alone.
• Standby bucket: word forms returned by am get-standby-bucket (e.g. "exempted") are now mapped to numbers, so the original bucket is recorded correctly and Exempted apps are not moved to Rare/Restricted.
• Boot: when the root manager skips the post-fs-data stage, service.sh now detects it (per-boot id marker), re-applies log.tag, debug/x props, reports honest statuses, and uses the latest saved config instead of the previous boot's snapshot.

HyperCool v2.2.1

• Restore: records for packages that are no longer installed are dropped, so uninstall purge no longer retries forever. Skipped while PackageManager is not ready, so no record is lost.
• Charge limit off: only resets night_charging when HyperCool set it; the ROM's own value is left alone.
• App bucket: now skips the same protected apps as Block background apps.
• Protected <-> Blocked: moving an app between the lists in one apply no longer undoes the change.

HyperCool v2.2

• Fixed: a restore that fails no longer loses the backup record. The original ROM value is kept for a retry, and uninstall only purges the backup after every restore succeeds
• Fixed: uninstall keeps the guard until restore succeeds; if the background restore fails or is interrupted, the guard retries on the next boot. A reinstall during the guard's 180 s grace period is left alone
• Fixed: App bucket now protects accessibility services, notification listeners and always-on VPN apps, the same apps Block background apps already protects
• Fixed: Protected apps records and restores the standby bucket and inactive state when the switch is turned off
• Fixed: turning Charge limit off writes night_charging=0 before stopping the keeper, and the keeper stop waits for the process to exit
• Fixed: Big-core CPU cap now works on kernels that expose only one cpufreq policy
• Fixed: JobScheduler batching is reported applied only when every wanted key took its value; a partial write is restored
• Fixed: the screen-off CPU cap no longer skips every cluster when two clusters share the same maximum frequency
• Fixed: the GMS Doze sysconfig overlay uses the module root product and system_ext directories, so the override is mounted on KernelSU/Magisk
• Fixed: existing configs gain keys containing digits (the F2FS GC settings) on upgrade; the WebUI save count matches
• Fixed: battery temperature parsers reject malformed values such as 4-5
• Fixed: safe mode counts a boot that reaches the end of the apply as good, even when boot_completed was slow
• Changed: banner artwork updated

HyperCool v2.1.1

• Fixed: the RAM optimizer no longer disables Xiaomi's perfmgr (/sys/module/perfmgr/parameters/perfmgr_enable). perfmgr is a GPU/frame boost framework, not a memory-reclaim one: the write added no RAM, was not restored when the switch was turned off (only a reboot brought it back), and was the only perfmgr parameter HyperCool changed. The VM, LMK and other vendor reclaim writes stay.
• Changed: the RAM optimizer details no longer list perfmgr under vendor reclaim frameworks.

HyperCool v2.1

• New: WebUI redesign: dark violet palette, separate rounded cards, flat top bar, floating bottom navigation with a tonal active tab
• New: Appearance in Tools: Dark theme (Standard, AMOLED, Light, Follow system) and Colors (System Dynamic from the wallpaper, HyperCool Violet, 9 color presets)
• Changed: the HyperCool title in the header keeps its color gradient, as in v2.0.1
• New: Experimental features are collected in a red "Experimental" zone at the bottom of their page (red title, red icons and switches)
• Changed: the labels KERNEL, SYSTEM, XIAOMI, SAFE, MODERATE, EXPERIMENTAL and the status labels (Applied, Partial, Failed) are now soft tonal pills instead of bright outlines
• Fixed: false "Applied" status. Protected apps and Block background apps now check that the background permission really changed; Debloat, Disable apps and Joyose count an app only if it is really disabled; GMS Doze, Smart Pixels and Adaptive refresh rate show Partial or Failed when they could not be confirmed; log and debug props show Failed when no prop was accepted
• Changed: Quick presets Max battery and Cool gaming now also switch on auto F2FS GC, auto dex2oat and runtime power (Max battery also fewer background jobs and Location/Bluetooth off during long screen-off). Keep Wi-Fi on, Charge limit, Adaptive refresh rate, ZRAM, Multitasking and Compact background apps are left as you set them when a preset does not mention them
• New: Appearance > Blur toolbar (on by default): frosted glass effect on the header and the bottom bar
• Changed: the header has rounded bottom corners, and the bottom bar no longer has an outline
• Changed: banner: the version pill is removed so the artwork can never show a stale version, and the remaining text lines up with the subtitle

HyperCool v2.0.1

Full Changelog: v2.1.1...v2.0.1

HyperCool v2.0

Full Changelog v2.0:

• New: Auto clean app cache every 1 to 7 days (was daily only)
• New: Keep cache of chosen apps (skipped by the auto clean and Clean now; good for games so they do not load shaders again)
• New: CPU keeper. When a big-core cap, a little-core cap or Park prime core is on, a tiny keeper checks every 30 s (only while the phone is awake) and puts them back if the ROM undid them. It gives up for 10 minutes if the ROM undoes them 5 times in 10 minutes. No new setting
• Fix: Park prime core no longer stops at "core_ctl is disabled": it switches core_ctl on for that cluster until the next reboot, checks that the core is really parked (reports Unsupported otherwise) and locks the core_ctl nodes so the ROM cannot undo it
• New: Little-core frequency cap (50-99%, default off, with its own Lock switch)
• New: Optimize apps (dex2oat) in More: compiles all apps, system apps included, with progress in percent, app count and the names being compiled. Modes Speed (default), Speed-profile, Everything, Reset to default. Optimize all apps or only the apps you pick. Pauses at 48°C battery (continues at 47°C), stops at 15% battery without charger or under 1 GB free storage. Runs once, nothing changes at boot
• Fix: Park prime core status now reads "parked (paused via core_ctl, stays online at minimum frequency N MHz)".
• New: Fewer background jobs (More > Extra power saving, Off / Balanced / Strong): JobScheduler waits for more jobs and up to 1-2 hours, so background work runs in fewer batches. Only the settings this Android lists in dumpsys jobscheduler are written, and they are read back; if not taken they are put back and it says Unsupported.
• New: Compact background apps (More > RAM, off by default): about 90 s after the screen goes off, when free RAM is under 30%, background apps get their memory compacted (cmd activity compact, not closed), at most every 20 min. Runs in the screen-off keeper (no extra process) and stops when the screen turns on. Frees RAM, does not save battery.
• New: Keep Wi-Fi on while the screen is off (Battery drain, off by default): if the ROM switches Wi-Fi off with the screen off, it is turned on again, seen at once through Wi-Fi link events (plus a 60 s timer). Wi-Fi you switch off yourself stays off. Shares the screen-off keeper.
• New: Location and Bluetooth off during long screen-off (Battery drain, off by default): after the screen has been off for 5 to 120 min (default 15), Location is switched off and comes back right when the screen turns on. Bluetooth can be switched off the same way (extra option; skipped while audio plays or an audio device is connected, best effort). Location alarms, Find My Device and navigation with the screen off get no position meanwhile. Runs in the same screen-off keeper, nothing is polled.
• New: Safe mode. If three boots in a row do not finish, HyperCool switches itself off for the next boot (the module description says so) and the ROM stays as it is; turn it on again in the manager when you want.
• New: F2FS garbage collection (More > Storage, off by default): when the screen has been off 10 min and the reclaimable space (F2FS "unusable") is at least 1 to 15 GB (default 4), it runs the same gc_urgent garbage collection as Android idle maintenance for up to 7 min, at most once a week. No charger needed (30% battery when not charging); battery under 40 C to start, stops at 45 C (adjustable), under 20% battery or when the screen turns on. Optional weekly fstrim; a notification shows the result; pauses 7 days if two runs free almost nothing. Needs /data on F2FS with the gc_urgent node. Not tested on a device yet.
• New: Auto optimize apps (More > Storage, off by default): once a week, after the screen has been off 10 min, all apps (system apps included) are compiled in the background with the same script as the Optimize apps card: mode of your choice (speed-profile by default, or speed / everything), one app at a time, never a force recompile (apps that are already optimized are skipped). No charger needed (40% battery when not charging); starts under 40 C, stops at 45 C, under 15% battery, under 1 GB free storage or when the screen turns on (the apps now compiling finish). A run you start by hand counts as this week's run and is never stopped by it. Notification with the result (can be turned off). Runs in the screen-off keeper.
• New: Top battery use (Home): shows which apps and system parts used the most battery since the last charge, with filters for user apps, system apps and hardware. Read only; uses dumpsys batterystats (mAh estimate) and falls back to wake lock time when the ROM has no estimate.
• Change: Home shows Battery health in mAh (full-charge capacity, with the % of design capacity) instead of the battery level, and the device name is bigger, bold, with a capital codename (POCO F5 (Marble)).