# RockTek G2 / SEI804RT — problem and solution matrix

Target checked live: RockTek RT-G2, SEI804RT/YYJ, Android TV 14, build 7475.

## Implemented in TECHNOZON Modifier RT-G2

| Problem | Evidence | Modifier solution | Safety / limits |
|---|---|---|---|
| Missing system file manager on ATV14 | 4PDA Android 14 consolidated list, post 137960544 | Direct Google Play links for File Manager Plus and LocalSend; ACTION_OPEN_DOCUMENT validation; shortcut to reset default-app association | Does not silently change the user's default handler |
| Android volume left below 25 before CEC/IR setup | User procedure; live device max is 25 | Two-stage wizard: temporarily disable CEC volume, set Android STREAM_MUSIC to maximum, then restore CEC after remote mode is selected | Original CEC state is shown and rollback is explicit |
| Missing technical overlay | SEI804 VideoInfoOverlay 17.0 analysis and live screenshot | Foreground application overlay: physical output resolution, live HDR, active HDMI audio format, CPU, temperature, RAM and network; Yellow toggles it automatically | Passive local-ADB key watcher avoids Accessibility and therefore does not turn OK into a long press. Network debugging on trusted LAN remains required |
| Limited power menu | SEI804 Advanced Reboot 1.0 analysis and live build 7475 test | Red opens the no-root power menu: power off, sleep, system power dialog, screenshot, reboot and recovery | Installer reuses the PC ADB key already authorized by the user, so no tvQuickActions setup or second RSA prompt is needed. Direct-to-TV IR Power cannot be observed by Android |
| Manual remote remapping is too complex | Physical RT-G2 remote capture: `KEY_PROG_RED` and `KEY_PROG_YELLOW` | Persistent foreground watcher maps Red to Power and Yellow to overlay automatically after installation | Exact RT-G2 device guard; no generic claim for other remotes/key names |
| Google TV promotional film cards | User procedure | DNS status check plus exact router block list: androidtvchannels-pa.googleapis.com and androidtvwatsonfe-pa.googleapis.com | Modifier never factory-resets the box automatically; DNS blocking belongs on router/Pi-hole/AdGuard Home |
| Audio output does not switch automatically | 4PDA post 137960544 | Audio-route audit covering HDMI, SPDIF, USB and Bluetooth plus quick settings entry | No forced global route until a reproducible firmware state is confirmed |
| Bluetooth pairing instability | 4PDA post 137960544; live OEM resolver and accessories screen | Opens RockTek action `com.nes.intent.action.ACCESSORIES`; RC-G2 and UR02 were visible live | Does not erase all paired devices automatically |
| Gboard globe switches once then stops | 4PDA post 137960544 | Direct input-method settings entry and guided layout re-registration | Gboard itself is Google-signed and is not patched |
| STESH / subscriptions / TV-box purchases | TECHNOZON X11 baseline and explicit user scope | Bundled TV Search, Subscriptions and TV Boxes components; RT-G2 product page | Subscription access must be enforced server-side |

## Diagnosed, not hidden behind a fake fix

| Problem | 4PDA evidence | Current handling |
|---|---|---|
| Multichannel PCM broken on ATV14 builds | post 137960544 | Detect/report active audio policy and format. Requires vendor audio-policy/firmware fix; Modifier does not claim to restore a missing HAL path. |
| TiViMate picture freezes while sound continues | posts 137960544 and 137640676 | Diagnostic note: one reported workaround was switching from problematic M3U8 playlist delivery to Xtream Codes. Not applied globally because streams/providers differ. |
| Homatics DVB tuner scan reboots after 10–15 seconds | post 137960544 | Classified as vendor driver/service crash. Collect logcat/tombstone after reproduction; no unsafe tuner service replacement. |
| Red LED absent in sleep / higher standby heat | post 137960544 | Reported as a firmware/power-state issue. LED control was removed from Modifier; deep/light sleep behavior is not overridden without power measurements. |
| CoreELEC incompatibility / Dolby Vision loss in some branches | post 137960544 | Out of Modifier scope: no bootloader, DTB, kernel or CoreELEC partition changes. |
| AAC silence in some Kinopub content | post 133863508 | Capture codec/container and audio policy before choosing passthrough/decoder workaround. |
| Global voice search returns limited film metadata | post 137960544 | STESH TV Search is offered as the separate search layer; the Google system package is not modified. |
| Sideloaded apps cannot enable accessibility | post 137960544 | Main overlay no longer needs Accessibility. Optional original SEI804 tools remain separate and are not enabled automatically. |

## Source posts

- https://4pda.to/forum/index.php?showtopic=1098463&view=findpost&p=137960544
- https://4pda.to/forum/index.php?showtopic=1098463&view=findpost&p=137640676
- https://4pda.to/forum/index.php?showtopic=1098463&view=findpost&p=133863508
- https://4pda.to/forum/index.php?showtopic=1098463&view=findpost&p=137543240
- https://4pda.to/forum/index.php?showtopic=1098463&view=findpost&p=142485224
