63 lines
2.0 KiB
Markdown
63 lines
2.0 KiB
Markdown
## Recovery Mode
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```
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adb reboot recovery
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```
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Ensure Phone is Off, Hold Volume Up + Power, Release as soon as the Samsung logo shows up, (Also release when warning about unsafe software etc. is shown)
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## Download Mode
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Hold Volume Up + Volume Down and plug USB cable into device; hold until download mode visible
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## Unlock Bootloader
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Enable OEM Unlocking in Android Developer Options, Enter Download Mode, Hold Volume Up, accept with Volume Up
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## Installation (WIP)
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```bash
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pmbootstrap install --no-recommends --android-recovery-zip --password pw --zap --recovery-install-partition super
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```
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## Create empty dtbo partition file
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```bash
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avbtool add_hash_footer --partition_name dtbo --partition_size 2621440 --image empty_dtbo.img
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```
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## Dump kernel values through debugfs
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```bash
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mount -t debugfs debugfs /sys/kernel/debug
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ls -lah /sys/kernel/debug # A lot of values here can be copied/dumped
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```
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## Fix bluetooth after reboot
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```bash
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sudo btmgmt --index 0 public-addr 00:11:22:33:44:55
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```
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NOTE: `bluez-btmgmt` must be installed
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## Enable Internet over USB
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(see https://wiki.postmarketos.org/wiki/USB_Internet)
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### Host
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```bash
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sysctl net.ipv4.ip_forward=1
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iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
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iptables -A FORWARD -s 172.16.42.0/24 -j ACCEPT
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iptables -A POSTROUTING -t nat -j MASQUERADE -s 172.16.42.0/24
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iptables-save
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```
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### Device
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```bash
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ip route add default via 172.16.42.2 dev usb0
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echo nameserver 1.1.1.1 > /etc/resolv.conf
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echo 'ip route add default via 172.16.42.2 dev usb0' > /etc/local.d/usb_internet.start
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chmod +x /etc/local.d/usb_internet.start
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rc-update add local
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```
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## Notes
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- `&pdc` implies +480 when using `&intc`
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- Regarding GPI DMA issue: https://oftc.irclog.whitequark.org/linux-msm/2023-11-26 (and following days)
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## Misc. Links
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- https://softhandtech.com/what-is-ffbm-mode-in-android/
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- https://wiki.postmarketos.org/wiki/Samsung_Galaxy_S24_Ultra_(samsung-e3q)
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- https://wiki.postmarketos.org/wiki/Samsung_Galaxy_A52_4G_(samsung-a52q)
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- https://github.com/JamiKettunen/qcom-fw-setup
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